/* ===== 深圳市华准精工机械技术有限公司 官网样式 ===== */
:root{
  --primary:#0d4b8c;
  --primary-dark:#0a3a6e;
  --primary-light:#1a6bbf;
  --accent:#e87817;
  --steel:#5a6b7b;
  --bg-light:#f4f7fa;
  --bg-gray:#eef2f6;
  --text:#2b3a47;
  --text-light:#6b7a89;
  --border:#dde4eb;
  --white:#ffffff;
  --shadow:0 6px 24px rgba(13,75,140,.10);
  --shadow-hover:0 12px 36px rgba(13,75,140,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","微软雅黑","PingFang SC","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--white);
  line-height:1.7;
  font-size:15px;
}
a{color:inherit;text-decoration:none;transition:color .25s}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 顶部条 ===== */
.topbar{
  background:var(--primary-dark);
  color:#cfe0f0;
  font-size:13px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#cfe0f0}
.topbar a:hover{color:#fff}
.topbar .tb-left{display:flex;gap:22px}
.topbar .tb-left span{display:inline-flex;align-items:center;gap:6px}
.topbar .tb-right{display:flex;gap:18px}

/* ===== 头部导航 ===== */
.header{background:#fff;position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:84px}
.logo{display:flex;align-items:center;gap:14px}
.logo .logo-mark{
  width:52px;height:52px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:22px;
  box-shadow:var(--shadow);letter-spacing:-1px;
}
.logo .logo-text .cn{font-size:20px;font-weight:700;color:var(--primary);letter-spacing:1px}
.logo .logo-text .en{font-size:11px;color:var(--text-light);letter-spacing:2px;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:4px}
.nav a{
  padding:10px 18px;font-size:16px;color:var(--text);font-weight:500;border-radius:6px;position:relative;
}
.nav a:hover{color:var(--primary)}
.nav a.active{color:var(--primary)}
.nav a.active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:2px;height:3px;
  background:var(--accent);border-radius:2px;
}
.nav-toggle{display:none;font-size:28px;background:none;border:none;color:var(--primary);cursor:pointer}

/* ===== 主图横幅 ===== */
.hero{
  position:relative;height:520px;display:flex;align-items:center;color:#fff;overflow:hidden;
}
.hero .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero .hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,58,110,.92) 0%,rgba(13,75,140,.78) 45%,rgba(13,75,140,.35) 100%)}
.hero .container{position:relative;z-index:2}
.hero .hero-inner{max-width:640px}
.hero .hero-tag{
  display:inline-block;padding:6px 16px;border:1px solid rgba(255,255,255,.4);border-radius:20px;
  font-size:13px;letter-spacing:2px;margin-bottom:20px;
}
.hero h1{font-size:42px;font-weight:700;margin-bottom:18px;line-height:1.3;letter-spacing:2px}
.hero h1 .hl{color:#ffb74d}
.hero p{font-size:17px;opacity:.92;margin-bottom:30px;max-width:560px}
.hero .hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 30px;border-radius:6px;font-size:15px;
  font-weight:500;cursor:pointer;border:none;transition:all .25s;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#d96a0f;transform:translateY(-2px);box-shadow:0 8px 20px rgba(232,120,23,.4)}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.btn-outline:hover{background:#fff;color:var(--primary);border-color:#fff}

/* ===== 小横幅（内页） ===== */
.page-banner{position:relative;height:260px;display:flex;align-items:center;color:#fff;overflow:hidden}
.page-banner .pb-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.page-banner .pb-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,58,110,.9),rgba(13,75,140,.7))}
.page-banner .container{position:relative;z-index:2}
.page-banner h2{font-size:34px;font-weight:700;letter-spacing:2px;margin-bottom:8px}
.page-banner .crumbs{font-size:13px;opacity:.85}
.page-banner .crumbs a:hover{color:#ffb74d}

/* ===== 通用区块 ===== */
.section{padding:72px 0}
.section.alt{background:var(--bg-light)}
.section-head{text-align:center;max-width:720px;margin:0 auto 50px}
.section-head .kicker{color:var(--accent);font-size:14px;letter-spacing:3px;text-transform:uppercase;font-weight:600;margin-bottom:10px}
.section-head h2{font-size:32px;font-weight:700;color:var(--text);letter-spacing:1px;margin-bottom:14px}
.section-head .sub{color:var(--text-light);font-size:15px}
.section-head .line{width:60px;height:3px;background:var(--accent);margin:16px auto 0;border-radius:2px}

/* ===== 关于区（首页） ===== */
.about-row{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-row .about-img{border-radius:10px;overflow:hidden;box-shadow:var(--shadow);height:340px;background-size:cover;background-position:center}
.about-row .about-text h3{font-size:24px;color:var(--primary);margin-bottom:18px;font-weight:600}
.about-row .about-text p{color:var(--text-light);margin-bottom:16px;text-align:justify}
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.about-stats .stat{text-align:center;padding:18px 8px;background:var(--bg-gray);border-radius:8px}
.about-stats .stat .num{font-size:30px;font-weight:700;color:var(--primary);display:block}
.about-stats .stat .lbl{font-size:13px;color:var(--text-light)}

/* ===== 产品分类网格 ===== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{
  background:#fff;border:1px solid var(--border);border-radius:10px;padding:30px 24px;text-align:center;
  transition:all .3s;cursor:pointer;position:relative;overflow:hidden;
}
.prod-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--primary);transform:scaleX(0);transition:transform .3s;transform-origin:left}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.prod-card:hover::before{transform:scaleX(1)}
.prod-card .icon{
  width:64px;height:64px;margin:0 auto 16px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px;
}
.prod-card h3{font-size:17px;color:var(--text);margin-bottom:8px;font-weight:600}
.prod-card p{font-size:13px;color:var(--text-light);line-height:1.6}
.prod-card .more{display:inline-block;margin-top:12px;color:var(--primary);font-size:13px;font-weight:500}

/* ===== 优势 ===== */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-item{padding:30px 24px;border-radius:10px;background:#fff;border:1px solid var(--border);transition:all .3s}
.adv-item:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.adv-item .num{font-size:14px;color:var(--accent);font-weight:700;letter-spacing:2px;margin-bottom:8px}
.adv-item h3{font-size:18px;color:var(--text);margin-bottom:10px;font-weight:600}
.adv-item p{font-size:13px;color:var(--text-light);line-height:1.7}

/* ===== 应用领域 ===== */
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.app-card{
  position:relative;height:180px;border-radius:10px;overflow:hidden;
  display:flex;align-items:flex-end;padding:20px;color:#fff;
}
.app-card .app-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .4s}
.app-card:hover .app-bg{transform:scale(1.08)}
.app-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(10,58,110,.88),rgba(13,75,140,.35))}
.app-card .app-ttl{position:relative;z-index:2;font-size:17px;font-weight:600;letter-spacing:1px}

/* ===== 品牌墙 ===== */
.brand-wrap{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.brand-item{
  padding:16px 30px;background:#fff;border:1px solid var(--border);border-radius:8px;
  font-size:15px;color:var(--steel);font-weight:600;transition:all .25s;min-width:120px;text-align:center;
}
.brand-item:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow)}

/* ===== CTA ===== */
.cta{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;padding:60px 0;text-align:center}
.cta h2{font-size:28px;font-weight:700;margin-bottom:12px;letter-spacing:1px}
.cta p{opacity:.9;margin-bottom:24px;font-size:16px}
.cta .btn-primary{background:#fff;color:var(--primary)}
.cta .btn-primary:hover{background:#ffb74d;color:#fff}

/* ===== 产品列表页 ===== */
.prod-cat{margin-bottom:50px}
.prod-cat .cat-head{display:flex;align-items:center;gap:14px;margin-bottom:24px;border-bottom:2px solid var(--border);padding-bottom:14px}
.prod-cat .cat-head .cat-icon{width:44px;height:44px;border-radius:8px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.prod-cat .cat-head h3{font-size:22px;color:var(--text);font-weight:600}
.prod-cat .cat-head .cat-desc{font-size:13px;color:var(--text-light);margin-left:auto}
.prod-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.prod-list li{
  background:#fff;border:1px solid var(--border);border-radius:8px;padding:16px 18px;
  display:flex;align-items:center;gap:12px;transition:all .25s;
}
.prod-list li:hover{border-color:var(--primary-light);box-shadow:var(--shadow);transform:translateX(4px)}
.prod-list li .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}
.prod-list li .name{font-size:14px;color:var(--text)}
.brand-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.brand-tags .bt{padding:6px 16px;background:var(--bg-gray);border-radius:20px;font-size:13px;color:var(--steel);font-weight:500}

/* ===== 关于页 ===== */
.about-page p{color:var(--text-light);margin-bottom:16px;text-align:justify}
.about-page h3{font-size:20px;color:var(--primary);margin:26px 0 14px;font-weight:600}
.timeline{margin-top:30px}
.timeline .tl-item{display:flex;gap:20px;padding:18px 0;border-bottom:1px dashed var(--border)}
.timeline .tl-item .yr{font-size:20px;font-weight:700;color:var(--accent);min-width:80px}
.timeline .tl-item .ct h4{font-size:16px;color:var(--text);margin-bottom:4px}
.timeline .tl-item .ct p{font-size:13px;color:var(--text-light);margin:0}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info .ci-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--border)}
.contact-info .ci-item .ci-icon{width:42px;height:42px;border-radius:8px;background:var(--bg-gray);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.contact-info .ci-item .ci-t{font-size:13px;color:var(--text-light);margin-bottom:2px}
.contact-info .ci-item .ci-v{font-size:15px;color:var(--text);font-weight:500}
.contact-map{border-radius:10px;overflow:hidden;box-shadow:var(--shadow);min-height:380px;background:var(--bg-gray)}
.inquiry-form{background:var(--bg-light);padding:30px;border-radius:10px}
.inquiry-form .f-row{margin-bottom:16px}
.inquiry-form label{display:block;font-size:13px;color:var(--text);margin-bottom:6px;font-weight:500}
.inquiry-form input,.inquiry-form textarea{
  width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:6px;font-size:14px;font-family:inherit;
}
.inquiry-form input:focus,.inquiry-form textarea:focus{outline:none;border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(26,107,191,.12)}
.inquiry-form textarea{resize:vertical;min-height:120px}

/* ===== 页脚 ===== */
.footer{background:#1a2a38;color:#a9b8c6;padding:56px 0 0}
.footer .f-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer .f-brand .logo-text .cn{color:#fff}
.footer .f-brand p{font-size:13px;margin-top:14px;line-height:1.8}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer .f-links li,.footer .f-contact li{font-size:13px;margin-bottom:10px}
.footer .f-links a:hover{color:#fff}
.footer .f-contact li{display:flex;gap:8px;align-items:flex-start}
.footer .f-bottom{padding:18px 0;text-align:center;font-size:12px;color:#7a8a99}
.footer .f-bottom a{color:#7a8a99}
.footer .f-bottom a:hover{color:#cfe0f0}

/* ===== 回到顶部 ===== */
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:8px;
  background:var(--primary);color:#fff;border:none;cursor:pointer;font-size:20px;
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:all .3s;z-index:90;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--accent)}

/* ===== 响应式 ===== */
@media(max-width:992px){
  .nav{display:none}
  .nav-toggle{display:block}
  .nav.open{display:flex;position:absolute;top:84px;left:0;right:0;flex-direction:column;background:#fff;padding:14px;box-shadow:0 8px 20px rgba(0,0,0,.12);gap:0}
  .nav.open a{padding:12px 18px;width:100%}
  .hero{height:auto;padding:60px 0}
  .hero h1{font-size:30px}
  .about-row,.contact-grid{grid-template-columns:1fr}
  .prod-grid,.adv-grid{grid-template-columns:repeat(2,1fr)}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .prod-list{grid-template-columns:1fr}
  .footer .f-top{grid-template-columns:1fr 1fr}
  .about-stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .prod-grid,.adv-grid,.app-grid,.about-stats,.footer .f-top{grid-template-columns:1fr}
  .topbar .tb-left{gap:12px;font-size:12px}
  .topbar .tb-right{display:none}
  .hero h1{font-size:24px}
  .section{padding:48px 0}
  .section-head h2{font-size:24px}
}