/* ========= 基础重置 ========= */
*{margin:0;padding:0;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;}
body{color:#333;line-height:1.6;background:#f7f8fa;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
img{max-width:100%;display:block;}
.container{max-width:1100px;margin:0 auto;padding:0 20px;}
.btn{display:inline-block;padding:12px 28px;background:#0066ff;color:#fff;border-radius:4px;font-size:16px;transition:.3s;}
.btn:hover{opacity:.9;}

/* ===== 导航 ===== */
header{background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.05);position:sticky;top:0;z-index:999;}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;}
.logo{font-weight:700;font-size:22px;color:#0066ff;}
nav ul{display:flex;gap:30px;}
nav a{position:relative;}
nav a:after{content:'';position:absolute;left:0;bottom:-4px;width:0;height:2px;background:#0066ff;transition:.3s;}
nav a:hover:after,
nav a.active:after{width:100%;}
.hamburger{display:none;flex-direction:column;gap:4px;cursor:pointer;}
.hamburger span{width:26px;height:3px;background:#0066ff;}

/* ===== 首页轮播 ===== */
.hero-slider{position:relative;width:100%;height:70vh;overflow:hidden;}
.hero-slider .slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity 1s ease-in-out;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;color:#fff;text-align:center;}
.hero-slider .slide.active{opacity:1;}
.hero-slider .slide::before{content:'';position:absolute;inset:0;background:rgba(0,0,0,.45);}
.slide-content{position:relative;z-index:2;max-width:600px;padding:0 20px;}
.slide-content h1{font-size:46px;margin-bottom:16px;}
.slide-content p{font-size:20px;margin-bottom:30px;}
.slider-nav{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3;}
.slider-nav span{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:background .3s;}
.slider-nav span.active{background:#fff;}

/* ===== 首页简介 ===== */
.intro-section{padding:80px 0;background:#fff;}
.intro-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:40px;align-items:center;}
.intro-img img{width:100%;border-radius:8px;box-shadow:0 6px 20px rgba(0,0,0,.08);}
.intro-text h2{font-size:32px;color:#0066ff;margin-bottom:20px;}
.intro-text p{font-size:16px;color:#555;line-height:1.8;}

/* ===== 通用页标题 ===== */
.page-title{padding:100px 0 40px;text-align:center;background:#fff;}
.page-title h1{font-size:36px;}

/* ===== 产品页 ===== */
.product-detail{display:flex;flex-wrap:wrap;gap:40px;align-items:flex-start;margin:60px auto;padding:0 20px;max-width:1100px;}
.product-image{flex:1 1 450px;}
.product-image img{width:100%;border-radius:8px;box-shadow:0 6px 20px rgba(0,0,0,.08);}
.product-info{flex:1 1 500px;}
.product-info h1{font-size:32px;color:#0066ff;margin-bottom:15px;}
.product-info p,.product-info li{font-size:16px;line-height:1.8;color:#555;margin-bottom:12px;}
.product-info ul{margin-left:20px;list-style:disc;}
.specs{margin:60px auto;padding:0 20px;max-width:1100px;}
.specs h2{margin-bottom:20px;font-size:24px;color:#222;}
.spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.05);}
.spec-table th,.spec-table td{padding:14px 20px;text-align:left;border-bottom:1px solid #eee;}
.spec-table th{background:#f7f8fa;font-weight:600;color:#333;width:30%;}

/* ===== 团队页 ===== */
.team{display:flex;flex-wrap:wrap;justify-content:center;gap:40px;margin:60px auto;padding:0 20px;max-width:1100px;}
.member{width:220px;text-align:center;}
.member img{width:120px;height:120px;border-radius:50%;object-fit:cover;margin-bottom:12px;}
.member h5{font-size:18px;margin-bottom:4px;}
.member span{color:#666;font-size:14px;}

/* ===== 联系页 ===== */
.company-intro{display:flex;flex-wrap:wrap;gap:40px;align-items:center;margin:60px auto;padding:0 20px;max-width:1100px;}
.company-intro .image{flex:1 1 450px;}
.company-intro .image img{width:100%;border-radius:8px;box-shadow:0 6px 20px rgba(0,0,0,.08);}
.company-intro .text{flex:1 1 500px;}
.company-intro .text h2{font-size:32px;color:#0066ff;margin-bottom:15px;}
.company-intro .text p{font-size:16px;line-height:1.8;color:#555;margin-bottom:12px;}
.contact-info{background:#f7f8fa;padding:60px 0;}
.contact-info .container{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:40px;max-width:1100px;margin:0 auto;padding:0 20px;}
.contact-info h2{grid-column:1/-1;text-align:center;font-size:28px;margin-bottom:20px;color:#222;}
.contact-item{background:#fff;border-radius:8px;padding:30px;text-align:center;box-shadow:0 4px 12px rgba(0,0,0,.05);}
.contact-item h3{color:#0066ff;margin:10px 0;}
.contact-item p{color:#555;line-height:1.7;}
.icon{width:48px;height:48px;margin:0 auto 15px;fill:#0066ff;}

/* FOOTER */
footer{background:#111;color:#eee;padding:10px 0 10px;text-align:center;font-size:14px;margin-top:50px;}

/* ===== 响应式 ===== */
@media(max-width:768px){
    nav ul{position:fixed;top:70px;right:-100%;width:70%;height:calc(100vh - 70px);background:#fff;flex-direction:column;align-items:center;justify-content:center;transition:.4s;}
    nav ul.active{right:0;}
    .hamburger{display:flex;}
    .hero-inner h1{font-size:32px;}
}