/* products.html */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:#333;line-height:1.6;background:#fff}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:12px 32px;border-radius:4px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s}
.btn-primary{background:#e8341a;color:#fff;border:2px solid #e8341a}
.btn-primary:hover{background:#c42a14;transform:translateY(-2px)}
.top-bar{background:#1a1a2e;color:#ccc;font-size:.82rem;padding:8px 0}
.top-bar .container{display:flex;justify-content:space-between;align-items:center}
.top-bar a{color:#ccc}
.top-bar a:hover{color:#e8341a}
header{position:sticky;top:0;z-index:1000;background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08)}
nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo-icon{width:44px;height:44px;background:#e8341a;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.4rem;font-weight:900}
.logo-text .name{font-size:1.1rem;font-weight:700;color:#1a1a2e}
.logo-text .eng{font-size:.72rem;color:#888;letter-spacing:1px}
.nav-links{display:flex;list-style:none;gap:8px}
.nav-links a{display:block;padding:8px 16px;font-size:.95rem;color:#333;border-radius:4px;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:#e8341a}
.nav-phone{font-weight:700;color:#e8341a;font-size:1rem;white-space:nowrap}
.nav-phone span{font-size:.8rem;color:#888;font-weight:400;display:block}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer}
.hamburger span{width:24px;height:2px;background:#333;display:block}

/* 页面头 */
.page-hero{background:linear-gradient(135deg,#1a1a2e,#0f3460);color:#fff;padding:60px 0;text-align:center}
.page-hero h1{font-size:2.4rem;font-weight:800;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.75);font-size:1.05rem}
.breadcrumb{display:flex;justify-content:center;gap:8px;margin-top:16px;font-size:.85rem;color:rgba(255,255,255,.6)}
.breadcrumb a{color:rgba(255,255,255,.6)}
.breadcrumb a:hover{color:#e8341a}

/* 产品导航 */
.prod-nav{background:#f8f8f8;border-bottom:1px solid #eee;position:sticky;top:72px;z-index:100}
.prod-nav-inner{display:flex;gap:0;overflow-x:auto}
.prod-nav-inner::-webkit-scrollbar{height:3px}
.prod-nav-inner::-webkit-scrollbar-thumb{background:#e8341a}
.prod-nav-btn{padding:16px 24px;font-size:.9rem;color:#555;white-space:nowrap;cursor:pointer;border-bottom:3px solid transparent;transition:all .2s}
.prod-nav-btn:hover,.prod-nav-btn.active{color:#e8341a;border-bottom-color:#e8341a}

/* 产品区块 */
.prod-section{padding:80px 0;border-bottom:1px solid #f0f0f0;scroll-margin-top:130px}
.prod-section:last-of-type{border-bottom:none}
.prod-section:nth-child(even){background:#fafafa}
.prod-header{margin-bottom:48px}
.prod-tag{display:inline-block;background:#e8341a;color:#fff;font-size:.8rem;padding:4px 14px;border-radius:12px;margin-bottom:12px}
.prod-header h2{font-size:2rem;font-weight:800;color:#1a1a2e;margin-bottom:12px}
.prod-header p{color:#666;font-size:1rem;max-width:700px;line-height:1.8}
.prod-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.prod-layout.reverse{direction:rtl}
.prod-layout.reverse>*{direction:ltr}
.prod-visual{background:linear-gradient(135deg,#fff5f3,#ffe0db);border-radius:16px;height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;overflow:hidden}
.prod-visual.blue{background:linear-gradient(135deg,#f0f7ff,#dbeeff)}
.prod-visual.green{background:linear-gradient(135deg,#f5fff0,#d9f5ce)}
.prod-visual.yellow{background:linear-gradient(135deg,#fffbf0,#ffefc8)}
.prod-visual.purple{background:linear-gradient(135deg,#f8f0ff,#e8d4ff)}
.prod-visual img{max-width:100%;max-height:240px;object-fit:contain;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.08)}
.prod-visual .big-icon{font-size:5rem;line-height:1}
.prod-visual .caption{font-size:.9rem;color:#888}
.prod-specs{margin-top:24px}
.prod-specs h4{font-size:1rem;font-weight:700;color:#1a1a2e;margin-bottom:12px}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.spec-item{background:#f8f8f8;border-radius:8px;padding:12px 16px}
.spec-item .k{font-size:.78rem;color:#888;margin-bottom:2px}
.spec-item .v{font-size:.95rem;font-weight:600;color:#1a1a2e}
.prod-features{margin-top:24px}
.prod-features h4{font-size:1rem;font-weight:700;color:#1a1a2e;margin-bottom:12px}
.feature-list{list-style:none}
.feature-list li{padding:8px 0;border-bottom:1px solid #f0f0f0;display:flex;align-items:flex-start;gap:8px;font-size:.9rem;color:#555}
.feature-list li::before{content:'✓';color:#e8341a;font-weight:700;flex-shrink:0;margin-top:1px}
.prod-cta{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}

/* 资质展示 */
.cert-section{background:#1a1a2e;color:#fff;padding:60px 0;text-align:center}
.cert-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:40px}
.cert-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:24px 16px}
.cert-card .icon{font-size:2.5rem;margin-bottom:10px}
.cert-card h4{font-size:.9rem;font-weight:600;margin-bottom:6px}
.cert-card p{font-size:.78rem;color:rgba(255,255,255,.6)}

/* ===== FAQ区块 ===== */
.faq-section { background: #f8f9fb; }
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.faq-item {
  background: #fff;
  border-radius: 10px;
  padding: 24px 28px;
  border-left: 4px solid #e8341a;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: box-shadow 0.2s;
}
.faq-item:hover { box-shadow: 0 6px 24px rgba(0,0,0,0.10); }
.faq-q {
  font-size: 1rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 10px;
  line-height: 1.5;
}
.faq-q::before {
  content: 'Q';
  display: inline-block;
  background: #e8341a;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  text-align: center;
  line-height: 20px;
  margin-right: 8px;
  vertical-align: middle;
}
.faq-a {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.8;
  padding-left: 28px;
}
@media (max-width: 768px) {
  .faq-grid { grid-template-columns: 1fr; }
}

/* Footer同首页 */
footer{background:#111;color:rgba(255,255,255,.6);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid #333}
.footer-col p,.footer-col a{font-size:.85rem;line-height:2;display:block;transition:color .2s}
.footer-col a:hover{color:#e8341a}
.footer-bottom{border-top:1px solid #222;padding-top:24px;display:flex;justify-content:center;align-items:center;font-size:.78rem;flex-wrap:nowrap;gap:0;white-space:nowrap}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:#e8341a}
.float-btn{width:52px;height:52px;border-radius:50%;background:#e8341a;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.4rem;box-shadow:0 4px 16px rgba(232,52,26,.4);cursor:pointer;transition:all .3s;position:fixed;right:24px;z-index:999}
.float-phone{bottom:90px}
.float-wx{bottom:150px;background:#07c160}
.float-top{bottom:24px;background:#555}
.float-btn:hover{transform:scale(1.1)}

@media(max-width:768px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .prod-layout{grid-template-columns:1fr}
  .prod-layout.reverse{direction:ltr}
  .spec-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:1.8rem}
}