: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-max-width: 1200px;
  --aisitex-border: #E9EDEF;
}
*: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;
}
/* 复用首页导航栏样式 */
/* 页面特有正文样式：现代编辑风格 Editorial Clean Style */
.aisitex-main:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  width: 100%;
}
.aisitex-download-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  max-width: var(--aisitex-max-width);
  margin: 0 auto;
  padding: 80px 24px 60px;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.aisitex-hero-content:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.aisitex-badge:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--aisitex-accent-bg);
  color: var(--aisitex-primary-dark);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 20px;
  width: fit-content;
}
.aisitex-hero-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--aisitex-text);
  letter-spacing: -0.02em;
}
.aisitex-hero-desc:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 1.1rem;
  color: var(--aisitex-text-muted);
  line-height: 1.7;
}
.aisitex-download-actions:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 8px;
}
.aisitex-download-card-group:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.aisitex-dl-platform-card:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  background: var(--aisitex-surface);
  border: 1px solid var(--aisitex-border);
  border-radius: 14px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.aisitex-dl-platform-card:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  transform: translateY(-2px);
  border-color: var(--aisitex-primary);
}
.aisitex-platform-info h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--aisitex-text);
  margin-bottom: 4px;
}
.aisitex-platform-info p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 0.85rem;
  color: var(--aisitex-text-muted);
}
.aisitex-btn:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--aisitex-primary);
  color: #ffffff;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.25);
  transition: background-color 0.2s ease, transform 0.1s ease;
  border: none;
  cursor: pointer;
  width: 100%;
}
.aisitex-btn:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  background-color: #20ba5a;
}
.aisitex-btn:active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  transform: scale(0.98);
}
.aisitex-hero-media:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  position: relative;
}
.aisitex-hero-image:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
  border: 1px solid var(--aisitex-border);
  display: block;
}
/* 全宽色带切换区 */
.aisitex-stripe-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  background-color: var(--aisitex-accent-bg);
  padding: 80px 24px;
  margin-top: 40px;
}
.aisitex-stripe-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  max-width: var(--aisitex-max-width);
  margin: 0 auto;
}
.aisitex-section-header:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}
.aisitex-section-header h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 2.2rem;
  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);
}
.aisitex-highlights-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.aisitex-highlight-card:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  background: var(--aisitex-surface);
  padding: 36px;
  border-radius: 16px;
  border: 1px solid var(--aisitex-border);
  box-shadow: 0 10px 30px rgba(0,0,0,0.03);
}
.aisitex-highlight-card h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--aisitex-text);
  margin-bottom: 12px;
}
.aisitex-highlight-card p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 1rem;
  color: var(--aisitex-text-muted);
  line-height: 1.7;
}
/* 底部安全与指引栏 */
.aisitex-guide-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  max-width: var(--aisitex-max-width);
  margin: 80px auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.aisitex-guide-content h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--aisitex-text);
}
.aisitex-guide-content p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  color: var(--aisitex-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 24px;
}
.aisitex-guide-list:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.aisitex-guide-item:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.aisitex-guide-icon:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background-color: var(--aisitex-accent-bg);
  color: var(--aisitex-primary-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 2px;
}
.aisitex-guide-text h4:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 1rem;
  font-weight: 600;
  color: var(--aisitex-text);
  margin-bottom: 4px;
}
.aisitex-guide-text p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
  font-size: 0.9rem;
  color: var(--aisitex-text-muted);
  margin: 0;
}
/* 页脚样式 */
/* 响应式设计适配 */
@media (max-width: 968px) {.aisitex-download-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 24px;
  }
.aisitex-hero-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    font-size: 2.2rem;
  }
.aisitex-download-card-group:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    grid-template-columns: 1fr;
  }
.aisitex-highlights-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    grid-template-columns: 1fr;
  }
.aisitex-guide-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    grid-template-columns: 1fr;
    gap: 30px;
  }
.aisitex-nav-menu.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    display: flex;
  }
.aisitex-menu-toggle.active span:nth-child(1):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
    transform: translateY(7px) 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(-7px) rotate(-45deg);
  }}

.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;
            }}