:root:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    --aisitex-primary: #464EB8;
    --aisitex-secondary: #6264A7;
    --aisitex-bg: #F8F9FA;
    --aisitex-text: #252423;
    --aisitex-text-light: #605E5C;
    --aisitex-max-width: 1200px;
}
*:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    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;
}
/* 导航栏复用样式 */
.aisitex-nav-overlay:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 999;
}
@media (max-width: 768px) {.aisitex-nav-menu.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        left: 0;
    }
.aisitex-nav-overlay.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        display: block;
    }}
/* 正文样式 */
main:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: block;
}
.aisitex-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    max-width: var(--aisitex-max-width);
    margin: 0 auto;
    padding: 0 24px;
}
/* 下载首屏舞台 */
.aisitex-download-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background: linear-gradient(135deg, #2b328c 0%, #464EB8 100%);
    color: #FFFFFF;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.aisitex-hero-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.aisitex-hero-content h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2.75rem;
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}
.aisitex-hero-content p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 36px;
    line-height: 1.6;
}
.aisitex-download-actions:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}
.aisitex-btn-primary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: #FFFFFF;
    color: var(--aisitex-primary);
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.15);
    transition: transform 0.2s, background-color 0.2s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}
.aisitex-btn-primary:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    transform: translateY(-2px);
    background-color: #f0f0f5;
}
.aisitex-btn-secondary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: background-color 0.2s;
    cursor: pointer;
    font-size: 1rem;
}
.aisitex-btn-secondary:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: rgba(255, 255, 255, 0.25);
}
.aisitex-hero-media:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    background: #FFFFFF;
}
.aisitex-hero-media img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}
/* 版本对照区块 */
.aisitex-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    padding: 80px 0;
}
.aisitex-section-header:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    text-align: center;
    max-width: 700px;
    margin: 0 auto 56px auto;
}
.aisitex-section-header h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2.25rem;
    color: var(--aisitex-text);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}
.aisitex-section-header p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.1rem;
    color: var(--aisitex-text-light);
    line-height: 1.6;
}
.aisitex-matrix-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.aisitex-card:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background: #FFFFFF;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0,0,0,0.04);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.aisitex-card:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(70, 78, 184, 0.08);
}
.aisitex-card-badge:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    position: absolute;
    top: 24px;
    right: 24px;
    background-color: #EBF0FF;
    color: var(--aisitex-primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.aisitex-card h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--aisitex-text);
}
.aisitex-card p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    color: var(--aisitex-text-light);
    font-size: 1.05rem;
    margin-bottom: 32px;
    line-height: 1.6;
}
.aisitex-card-image:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 24px;
    border: 1px solid #eee;
}
.aisitex-card-image img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    width: 100%;
    height: auto;
    display: block;
}
/* 安装决策指引区 */
.aisitex-guide-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: #FFFFFF;
    padding: 80px 0;
    border-top: 1px solid #E1DFDD;
    border-bottom: 1px solid #E1DFDD;
}
.aisitex-steps-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.aisitex-step-item:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background: var(--aisitex-bg);
    padding: 32px;
    border-radius: 16px;
    position: relative;
}
.aisitex-step-number:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--aisitex-primary);
    opacity: 0.2;
    margin-bottom: 12px;
    line-height: 1;
}
.aisitex-step-item h4:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--aisitex-text);
}
.aisitex-step-item p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    color: var(--aisitex-text-light);
    font-size: 0.95rem;
}
/* 页脚 */
/* 响应式断点适配 */
@media (max-width: 968px) {.aisitex-hero-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)), .aisitex-matrix-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)), .aisitex-steps-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        grid-template-columns: 1fr;
    }
.aisitex-hero-content h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        font-size: 2.25rem;
    }}

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #252423;
}

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

.aisitex-header{
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #E1DFDD;
        }

.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: #252423;
            font-weight: 700;
            font-size: 1.15rem;
        }

.aisitex-header .aisitex-brand-logo{
            width: 36px;
            height: 36px;
            background: #464EB8;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: bold;
            font-size: 1.2rem;
        }

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

.aisitex-header .aisitex-nav-link{
            text-decoration: none;
            color: #605E5C;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s;
            position: relative;
            padding: 8px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #464EB8;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #464EB8;
            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: #252423;
            margin: 5px 0;
            transition: 0.3s;
        }

@media (max-width: 968px){.aisitex-header nav{
                position: fixed;
                top: 72px;
                right: -100%;
                width: 280px;
                height: calc(100vh - 72px);
                background: #FFFFFF;
                flex-direction: column;
                align-items: flex-start;
                padding: 32px;
                box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
                transition: right 0.3s ease;
                z-index: 999;
            }

.aisitex-header nav.active{
                right: 0;
            }

.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 Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #252423;
}

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

.aisitex-footer{
            background-color: #252423;
            color: #E1DFDD;
            padding: 48px 0;
            font-size: 0.9rem;
        }

.aisitex-footer .aisitex-footer-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
        }

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

.aisitex-footer .aisitex-footer-links a{
            color: #E1DFDD;
            text-decoration: none;
            transition: color 0.2s;
        }

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