*{margin:0;padding:0;box-sizing:border-box;font-family:'PingFang SC','Microsoft YaHei',sans-serif}
:root{--primary:#1677ff;--dark:#0b101a;--gray:#667085;--light:#f8fafc;--radius:16px;--shadow:0 12px 32px rgba(0,0,0,0.06);--shadow-lg:0 20px 40px rgba(0,0,0,0.09)}
body{color:var(--dark);background:#fff;line-height:1.7}
img{max-width:100%;border-radius:var(--radius)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
  a {
            text-decoration: none; 
            color: inherit; 
        }

/* 导航 */
header{position:sticky;top:0;background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,0.05);z-index:999}
.nav{display:flex;justify-content:space-between;align-items:center;height:80px}
.logo{font-size:26px;font-weight:700;color:var(--primary)}
.menu a{margin-left:32px;text-decoration:none;color:var(--dark);font-weight:500;transition:.3s}
.menu a:hover{color:var(--primary)}

/* 首屏 */
.hero{padding:100px 0;background:linear-gradient(135deg,#e6f0ff 0%,#fff 100%);text-align:center}
.hero h1{font-size:50px;line-height:1.2;margin-bottom:20px}
.hero p{font-size:20px;color:var(--gray);max-width:750px;margin:0 auto 40px}
.btn{display:inline-block;padding:18px 44px;background:var(--primary);color:#fff;border-radius:50px;text-decoration:none;font-weight:500;font-size:16px;transition:.3s;box-shadow:0 8px 24px rgba(22,119,255,0.25)}
.btn:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(22,119,255,0.3)}
.hero-img{max-width:900px;margin:60px auto 0;border-radius:20px;box-shadow:var(--shadow-lg)}

/* 模块标题 */
.section-title{text-align:center;margin-bottom:60px}
.section-title h2{font-size:36px;margin-bottom:12px}
.section-title p{font-size:18px;color:var(--gray)}

/* 版本介绍 */
.version{padding:100px 0;background:var(--light)}
.version-box{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.version-item{background:#fff;padding:40px;border-radius:var(--radius);box-shadow:var(--shadow)}
.version-item h3{font-size:24px;margin-bottom:16px;color:var(--primary)}
.version-item p{color:var(--gray);margin-bottom:20px}

/* 核心功能 */
.features{padding:100px 0}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;padding:36px;border-radius:var(--radius);box-shadow:var(--shadow);text-align:center;transition:.3s}
.feature-card:hover{transform:translateY(-8px)}
.feature-card h3{font-size:20px;margin:16px 0 10px}
.feature-card p{color:var(--gray)}

/* AI互动 */
.ai-interact{padding:100px 0;background:var(--light)}
.interact-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.interact-item{background:#fff;padding:28px;border-radius:var(--radius);box-shadow:var(--shadow)}
.interact-item h4{font-size:18px;margin-bottom:8px;color:var(--primary)}

/* 私有化部署 */
.private{padding:100px 0}
.private-box{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.private-item{background:#fff;padding:40px;border-radius:var(--radius);box-shadow:var(--shadow)}
.private-item h3{font-size:22px;margin-bottom:16px}
.private-item p{color:var(--gray)}

/* 底部 */
footer{background:var(--dark);color:#fff;padding:70px 0;text-align:center}
footer p{margin-bottom:10px;color:rgba(255,255,255,0.8)}

/* 自适应 */
@media(max-width:992px){
.version-box,.private-box,.features-grid,.interact-list{grid-template-columns:1fr}
.hero h1{font-size:34px}
.menu{display:none}
}