/* 核心设计变量与重置 */
:root:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    --aisitex-primary: #25D366;
    --aisitex-primary-dark: #128C7E;
    --aisitex-bg: #F7F8FA;
    --aisitex-surface: #FFFFFF;
    --aisitex-text: #111B21;
    --aisitex-text-muted: #667781;
    --aisitex-accent-bg: #EBF5F0;
    --aisitex-border: #E9EDEF;
    --aisitex-max-width: 1200px;
    --aisitex-radius: 16px;
}
*: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: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--aisitex-bg);
    color: var(--aisitex-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
/* 导航栏复用首页标准 */
.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: 99;
}
/* 正文主区域与现代编辑风格 (Editorial Clean Style) */
.aisitex-main:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    max-width: var(--aisitex-max-width);
    margin: 0 auto;
    padding: 60px 24px;
}
/* 首屏区域：左文右图分栏 */
.aisitex-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 80px;
}
.aisitex-hero-content h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2.75rem;
    line-height: 1.2;
    font-weight: 800;
    color: var(--aisitex-text);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}
.aisitex-hero-content p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.125rem;
    color: var(--aisitex-text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}
.aisitex-hero-actions:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: flex;
    gap: 16px;
}
.aisitex-btn:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}
.aisitex-btn-primary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: var(--aisitex-primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.3);
}
.aisitex-btn-primary:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: #22bf5b;
    transform: translateY(-1px);
}
.aisitex-btn-outline:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: transparent;
    color: var(--aisitex-text);
    border: 1px solid var(--aisitex-border);
}
.aisitex-btn-outline:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    border-color: var(--aisitex-text-muted);
    background-color: rgba(0,0,0,0.02);
}
.aisitex-hero-media:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background: var(--aisitex-surface);
    border-radius: var(--aisitex-radius);
    box-shadow: 0 20px 40px rgba(0,0,0,0.06);
    overflow: hidden;
    border: 1px solid var(--aisitex-border);
}
.aisitex-hero-media img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    width: 100%;
    height: auto;
    display: block;
}
/* 全宽温润色带章节 (Editorial Stage) */
.aisitex-section-band:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background-color: var(--aisitex-accent-bg);
    border-radius: var(--aisitex-radius);
    padding: 60px 48px;
    margin-bottom: 80px;
}
.aisitex-section-header:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    text-align: center;
    max-width: 700px;
    margin: 0 auto 48px auto;
}
.aisitex-section-header h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2rem;
    font-weight: 700;
    color: var(--aisitex-text);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}
.aisitex-section-header p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.05rem;
    color: var(--aisitex-text-muted);
    line-height: 1.6;
}
/* 三步引导网格 */
.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-card:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background: var(--aisitex-surface);
    padding: 36px 28px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.04);
    position: relative;
    border: 1px solid var(--aisitex-border);
}
.aisitex-step-number:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--aisitex-primary);
    opacity: 0.85;
    margin-bottom: 16px;
    line-height: 1;
}
.aisitex-step-card h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--aisitex-text);
}
.aisitex-step-card p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 0.95rem;
    color: var(--aisitex-text-muted);
    line-height: 1.6;
}
/* 进阶功能与场景切片 */
.aisitex-features-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 80px;
}
.aisitex-features-text h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--aisitex-text);
}
.aisitex-features-text p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.05rem;
    color: var(--aisitex-text-muted);
    margin-bottom: 24px;
    line-height: 1.7;
}
.aisitex-checklist:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.aisitex-checklist li:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 1rem;
    color: var(--aisitex-text);
    font-weight: 500;
}
.aisitex-checklist svg:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    fill: var(--aisitex-primary);
    margin-top: 2px;
}
.aisitex-feature-media:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background: var(--aisitex-surface);
    border-radius: var(--aisitex-radius);
    overflow: hidden;
    box-shadow: 0 16px 32px rgba(0,0,0,0.06);
    border: 1px solid var(--aisitex-border);
}
.aisitex-feature-media img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    width: 100%;
    height: auto;
    display: block;
}
/* 底部 CTA 引导区 */
.aisitex-cta-banner:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    background: linear-gradient(135deg, #111B21 0%, #1f2c34 100%);
    color: #ffffff;
    border-radius: var(--aisitex-radius);
    padding: 60px 40px;
    text-align: center;
    margin-top: 60px;
}
.aisitex-cta-banner h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}
.aisitex-cta-banner p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 1.1rem;
    color: #8696a0;
    max-width: 600px;
    margin: 0 auto 32px auto;
    line-height: 1.6;
}
/* 页脚 */
.aisitex-footer-content:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    max-width: var(--aisitex-max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}
.aisitex-footer-links:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: flex;
    gap: 24px;
}
.aisitex-footer-links a:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    color: var(--aisitex-text-muted);
    text-decoration: none;
    transition: color 0.2s;
}
.aisitex-footer-links a:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    color: var(--aisitex-primary-dark);
}
/* 响应式断点 */
@media (max-width: 968px) {.aisitex-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        grid-template-columns: 1fr;
        gap: 36px;
        text-align: center;
    }
.aisitex-hero-content h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        font-size: 2.25rem;
    }
.aisitex-hero-actions:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        justify-content: center;
    }
.aisitex-steps-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        grid-template-columns: 1fr;
        gap: 20px;
    }
.aisitex-features-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        grid-template-columns: 1fr;
        gap: 36px;
    }
.aisitex-features-grid.reversed:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        display: flex;
        flex-direction: column-reverse;
    }
.aisitex-nav-menu.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        left: 0;
    }
.aisitex-menu-toggle.active span:nth-child(1):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        transform: translateY(9px) rotate(45deg);
    }
.aisitex-menu-toggle.active span:nth-child(2):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        opacity: 0;
    }
.aisitex-menu-toggle.active span:nth-child(3):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        transform: translateY(-9px) rotate(-45deg);
    }
.aisitex-nav-overlay:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        display: block;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
.aisitex-nav-overlay.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
        opacity: 1;
        visibility: visible;
    }}

.aisitex-header {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #111B21;
}

.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-color: rgba(247, 248, 250, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #E9EDEF;
        }

.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: 1.25rem;
            color: #111B21;
        }

.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: #667781;
            transition: color 0.2s ease;
            position: relative;
            padding: 6px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #128C7E;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #25D366;
            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: #111B21;
            margin: 5px 0;
            transition: 0.3s;
        }

@media (max-width: 968px){.aisitex-header .aisitex-nav-menu{
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: #FFFFFF;
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.08);
                border-bottom: 1px solid #E9EDEF;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            }

.aisitex-header .aisitex-nav-menu.active{
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

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

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

.aisitex-footer {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #111B21;
}

.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{
            border-top: 1px solid #E9EDEF;
            padding: 32px 24px;
            text-align: center;
            color: #667781;
            font-size: 0.9rem;
            background-color: #FFFFFF;
        }

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

@media (max-width: 968px){.aisitex-footer .aisitex-footer-inner{
                flex-direction: column;
                gap: 16px;
            }}