/* 全局样式 */
*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei",sans-serif}
img{max-width:100%;display:block} /* 修复：移动端图片100%宽度 */
a{text-decoration:none;color:inherit}
ul{list-style:none}

/* 基础容器适配 - 移除固定宽度限制 */
body{min-width:unset;overflow-x:hidden;} /* 取消最小宽度，防止移动端横向滚动 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 15px}

/* 顶部导航（固定顶部） */
.header{background:#ffffff;padding:12px 0;border-bottom:1px solid #eee;position:fixed;top:0;left:0;right:0;z-index:999;
box-shadow: 0 1px 3px 0 rgb(0 0 0 / 16%), 0 1px 3px 0 rgb(0 0 0 / 12%)}
.header .container{display:flex;justify-content:space-between;align-items:center}
.logo{font-size:18px;font-weight:bold;color:#333}
.nav{display:flex;gap:15px; /* 移动端缩小间距 */overflow-x:auto;padding-bottom:5px;} /* 导航横向滚动 */
.nav a{font-size:16px;color:#666;padding:8px 0;position:relative;transition:color 0.3s;white-space:nowrap;} /* 禁止文字换行 */
.nav a.active{color:#0066cc;font-weight:500}
.nav a.active::after{content:"";position:absolute;bottom:0;left:0;width:100%;height:2px;background:#0066cc}

/* 轮播 Banner */
.banner-carousel{margin-top:56px;position:relative;height:250px;overflow:hidden;background:#3a2b91;color:#fff}
.banner-slide{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;text-align:center;opacity:0;transition:opacity 1s ease;padding:0 15px;}
.banner-slide.active{opacity:1}
.banner-slide h3{font-size:16px;margin-bottom:8px}
.banner-slide h1{font-size:28px;margin-bottom:10px}
.banner-slide p{font-size:13px;opacity:0.9;margin-bottom:20px;line-height:1.5}
.banner-slide .btn{display:inline-block;background:#ff6685;color:#fff;padding:10px 25px;border-radius:30px;font-size:14px}
.banner-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:10px}
.banner-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,0.3);cursor:pointer}
.banner-dot.active{background:#fff}

/* 板块标题 */
.section-title{text-align:center;padding:30px 0 15px}
.section-title h2{font-size:22px;color:#333;margin-bottom:8px}
.section-title p{font-size:12px;color:#999}

/* 产品模块 */
.products{padding-bottom:30px}
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px} /* 移动端2列布局 */
.product-item{padding:20px;text-align:center;border-radius:6px;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,0.05)}
.product-item .icon{width:40px;height:40px;border-radius:50%;background:#f0f5ff;display:flex;align-items:center;justify-content:center;margin:0 auto 10px;color:#0066cc;font-size:20px}
.product-item h3{font-size:14px;color:#333;margin-bottom:6px}
.product-item p{font-size:12px;color:#999;line-height:1.5}

/* 为什么选择我们 */
.why-us{padding:30px 0;background:#f9f9f9}
.why-grid{display:grid;grid-template-columns:1fr;gap:15px} /* 移动端1列布局 */
.why-item{display:flex;gap:15px;background:#fff;padding:15px;border-radius:6px;box-shadow:0 1px 3px rgba(0,0,0,0.05)}
.why-item .icon{color:#0066cc;font-size:18px;margin-top:2px}
.why-item h4{font-size:14px;color:#333;margin-bottom:6px}
.why-item p{font-size:12px;color:#666;line-height:1.6}

/* 案例模块 */
.cases{padding-bottom:30px}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px} /* 移动端2列布局 */
.case-item{background:#fff;padding:10px;border-radius:4px;display:flex;align-items:center;justify-content:center;aspect-ratio:1.2/1; /* 保持图片比例 */overflow:hidden}
.case-item img{width:100%;height:100%;object-fit:cover; /* 图片自适应 */}

/* 定价模块 */
.pricing{padding-bottom:30px}
.pricing-grid{display:grid;grid-template-columns:1fr;gap:20px} /* 移动端1列布局 */
.pricing-item{background:#fff;padding:25px;border-radius:6px;box-shadow:0 2px 12px rgba(0,0,0,0.05);text-align:center}
.pricing-item h3{font-size:15px;color:#333;margin-bottom:10px}
.pricing-item .price{font-size:24px;color:#333;margin-bottom:15px}
.pricing-item li{font-size:13px;color:#666;margin-bottom:8px}
.pricing-item .btn{display:inline-block;background:#ff6685;color:#fff;padding:10px 25px;border-radius:30px;font-size:13px;margin-top:15px;border:none;cursor:pointer}

/* 联系模块 */
.contact{padding:20px 0}
.contact-grid{display:grid;grid-template-columns:1fr;gap:20px} /* 移动端1列布局 */
.contact-form{background:#fff;padding:20px;border-radius:6px;box-shadow:0 1px 3px rgba(0,0,0,0.05)}
.contact-form h3{font-size:16px;color:#333;margin-bottom:15px}
.form-item{margin-bottom:12px}
.form-item input{width:100%;padding:12px;border:1px solid #eee;border-radius:4px;font-size:13px}
.form-item .btn{width:100%;background:#ff6685;color:#fff;padding:12px;border-radius:30px;font-size:15px;border:none;cursor:pointer}
.info-item{background:#fff;padding:15px;border-radius:6px;margin-bottom:10px;box-shadow:0 1px 3px rgba(0,0,0,0.05)}
.info-item h4{font-size:14px;color:#333;margin-bottom:8px}
.info-item p{font-size:12px;color:#666;line-height:1.6}

/* 页脚 */
.footer{background:#fff;padding:20px 0;border-top:1px solid #eee}
.footer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin-bottom:15px} /* 移动端2列布局 */
.footer-col h4{font-size:14px;color:#333;margin-bottom:10px}
.footer-col li{font-size:12px;color:#999;margin-bottom:6px;line-height:1.5}
.copyright{text-align:center;font-size:11px;color:#999;padding-top:15px;border-top:1px solid #eee;line-height:1.5}

/* 媒体查询：针对平板/大屏手机的优化 (768px以上) */
@media (min-width: 768px) {
  .product-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .why-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .case-grid{grid-template-columns:repeat(3,1fr);gap:15px}
  .pricing-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .contact-grid{grid-template-columns:1fr 1fr;gap:20px}
  .footer-grid{grid-template-columns:repeat(4,1fr);gap:15px}
  .banner-carousel{height:300px}
  .banner-slide h1{font-size:32px}
}

/* 媒体查询：针对桌面端 (1024px以上) */
@media (min-width: 1024px) {
  .why-grid{grid-template-columns:repeat(3,1fr);gap:30px}
  .case-grid{grid-template-columns:repeat(4,1fr);gap:20px}
  .pricing-grid{grid-template-columns:repeat(3,1fr);gap:25px}
  .nav{gap:30px}
}