/* ========== Base ========== */
:root{
  --primary:#59bb56;
  --primary-dark:#4aa247;
  --text:#333;
  --text-light:#666;
  --muted:#999;
  --border:#e5e5e5;
  --bg:#fff;
  --bg-soft:#f5fbf4;
  --bg-green:#eaf6e9;
  --radius:4px;
  --container:1200px;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow-md:0 6px 20px rgba(0,0,0,.08);
}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Poppins','Helvetica Neue',Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  font-size:15px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:var(--primary)}
ul{list-style:none;margin:0;padding:0}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 26px;
  background:var(--primary);color:#fff;
  border-radius:999px;
  font-weight:500;font-size:14px;letter-spacing:.3px;
  transition:.25s;
  cursor:pointer;
}
.btn:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn--ghost{background:transparent;border:1px solid var(--primary);color:var(--primary)}
.btn--ghost:hover{background:var(--primary);color:#fff}
.btn--lg{padding:14px 40px;font-size:15px}

/* ========== Section titles ========== */
.section{padding:60px 0}
.section--soft{background:var(--bg-soft)}
.section--green{background:var(--bg-green)}
.section-title{
  text-align:center;
  font-size:34px;
  font-weight:600;
  color:#222;
  margin:0 0 14px;
  letter-spacing:.3px;
}
.section-title.with-underline:after{
  content:"";display:block;width:60px;height:3px;background:var(--primary);
  margin:18px auto 0;border-radius:2px;
}
.section-subtitle{
  text-align:center;color:var(--text-light);
  max-width:760px;margin:0 auto 40px;
  font-size:14px;line-height:1.8;
}

/* ========== Header ========== */
.site-header{
  background:#fff;
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;
}
.header-top{
  display:flex;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-light);
  padding:8px 24px;border-bottom:1px solid #f0f0f0;
  max-width:var(--container);margin:0 auto;
}
.header-top .contact-info{display:flex;gap:22px}
.header-top .contact-info span:before{
  content:"";display:inline-block;width:14px;height:14px;margin-right:6px;
  vertical-align:-2px;background:var(--primary);border-radius:50%;
  mask:radial-gradient(circle,#000 45%,transparent 46%);
}
.header-main{
  display:flex;align-items:center;justify-content:space-between;
  max-width:var(--container);margin:0 auto;
  padding:14px 24px;gap:20px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-img{display:block;width:190px;height:58px;object-fit:contain;object-position:left center}
.site-footer .logo-img{filter:brightness(0) invert(1);opacity:.96}
.logo-mark{
  width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:20px;
  box-shadow:var(--shadow-sm);
}
.logo-text{font-weight:700;font-size:19px;color:#222;letter-spacing:.5px}
.logo-text small{display:block;font-size:10px;color:var(--primary);font-weight:500;letter-spacing:1.2px;margin-top:-2px}

.main-nav>ul{display:flex;align-items:center;gap:6px}
.main-nav a{
  display:block;padding:12px 16px;
  font-size:14px;font-weight:500;color:#333;
  position:relative;
}
.main-nav a:hover{color:var(--primary)}
.main-nav .sub-caret{
  font-size:10px;color:var(--muted);
  margin-left:4px;transition:transform .2s;
}
.main-nav li.has-sub:hover>a .sub-caret{transform:rotate(180deg);color:var(--primary)}
.main-nav .sub-menu{
  position:absolute;top:100%;left:0;min-width:240px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-md);
  padding:8px 0;opacity:0;visibility:hidden;transform:translateY(6px);
  transition:.2s;z-index:50;
}
.main-nav li.has-sub{position:relative}
.main-nav li.has-sub:hover .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.main-nav .sub-menu a{padding:8px 20px;font-size:13px;font-weight:400}
.main-nav .sub-menu a:hover{background:var(--bg-soft);color:var(--primary)}

.header-actions{display:flex;align-items:center;gap:12px}
.search-box{position:relative}
.search-box input{
  width:200px;padding:8px 36px 8px 14px;
  border:1px solid var(--border);border-radius:999px;
  font-size:13px;font-family:inherit;outline:none;transition:.2s;
}
.search-box input:focus{border-color:var(--primary);width:240px}
.search-box .search-btn{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;color:var(--text-light);
  display:grid;place-items:center;
}

.mobile-toggle{display:none}

/* ========== Hero ========== */
.hero{
  position:relative;height:clamp(500px,56.25vw,650px);
  display:flex;align-items:center;
  background:linear-gradient(135deg,#2a3833 0%,#3d4f46 100%) center/cover no-repeat;
  color:#fff;overflow:hidden;isolation:isolate;
}
.hero:before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(15,24,20,.78) 0%,rgba(15,24,20,.52) 42%,rgba(15,24,20,.08) 76%);
  z-index:1;
}
.hero-slides,.hero-slide{position:absolute;inset:0}
.hero-slide{opacity:0;visibility:hidden;transform:scale(1.025);transition:opacity .8s ease,transform 1.4s ease,visibility .8s;z-index:0}
.hero-slide.is-active{opacity:1;visibility:visible;transform:scale(1);z-index:1}
.hero-slide img{display:block;width:100%;height:100%;object-fit:cover;object-position:center center}
.hero .hero-content{position:relative;z-index:2;padding:80px 72px 110px 24px}
.hero .eyebrow{
  display:inline-block;padding:6px 16px;
  background:rgba(89,187,86,.2);border:1px solid rgba(89,187,86,.5);
  color:#d9f3d8;border-radius:999px;
  font-size:13px;letter-spacing:1px;margin-bottom:20px;
}
.hero h1{
  font-size:58px;font-weight:600;line-height:1.15;
  margin:0 0 18px;letter-spacing:.5px;max-width:720px;
}
.hero p{font-size:17px;max-width:580px;color:#e5ecdf;margin:0 0 32px}
.hero .hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-controls{position:absolute;z-index:3;left:50%;bottom:28px;transform:translateX(-50%);display:flex;align-items:center;gap:14px}
.hero-arrow{width:42px;height:42px;border:1px solid rgba(255,255,255,.5);border-radius:50%;display:grid;place-items:center;color:#fff;background:rgba(18,29,24,.35);backdrop-filter:blur(6px);transition:background .2s,border-color .2s,transform .2s}
.hero-arrow:hover,.hero-arrow:focus-visible{background:var(--primary);border-color:var(--primary);transform:translateY(-1px)}
.hero-pagination{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:999px;background:rgba(18,29,24,.38);backdrop-filter:blur(6px)}
.hero-dot{width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.55);transition:width .3s,background .3s}
.hero-dot.is-active{width:25px;background:#fff}
.hero :focus-visible{outline:3px solid rgba(217,243,216,.9);outline-offset:3px}

/* ========== Page banner ========== */
.page-banner{
  min-height:260px;display:flex;align-items:center;
  background:linear-gradient(135deg,#3a4c43,#556b5d) center/cover no-repeat;
  color:#fff;position:relative;
}
.page-banner:before{content:"";position:absolute;inset:0;background:rgba(0,0,0,.35)}
.page-banner .container{position:relative;z-index:1;padding:50px 24px}
.page-banner h1{font-size:40px;margin:0 0 8px;font-weight:600}
.page-banner .crumb{font-size:13px;color:#cfe5ce}
.page-banner .crumb a{color:#fff}
.page-banner .crumb a:hover{color:var(--primary)}

/* ========== Product grid ========== */
.product-grid{
  display:grid;gap:22px;
  grid-template-columns:repeat(4,1fr);
  margin:0 0 30px;
}
.product-card{
  background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;
  transition:.25s;text-align:center;
}
.product-card:hover{
  box-shadow:var(--shadow-md);transform:translateY(-4px);
  border-color:transparent;
}
.product-card .thumb{
  aspect-ratio:1/1;overflow:hidden;
  background:#f7f7f7;display:grid;place-items:center;
}
.product-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s;
}
.product-card:hover .thumb img{transform:scale(1.06)}
.product-card h3{
  padding:14px 14px 18px;
  font-size:13px;font-weight:500;color:#333;
  margin:0;line-height:1.5;min-height:70px;
}
.product-card .code{
  font-size:11px;color:var(--primary);font-weight:600;
  letter-spacing:1px;text-transform:uppercase;display:block;margin-bottom:4px;
}
.center-cta{text-align:center;margin-top:20px}

/* ========== Features / Why Choose Us ========== */
.features-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
  margin-top:40px;
}
.feature-card{
  padding:34px 24px;text-align:center;
  background:#fff;border-radius:var(--radius);
  transition:.25s;border:1px solid transparent;
}
.feature-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.feature-icon{
  width:64px;height:64px;border-radius:50%;
  background:var(--bg-green);color:var(--primary);
  display:grid;place-items:center;font-size:28px;font-weight:700;
  margin:0 auto 18px;
}
.feature-card h3{font-size:17px;margin:0 0 12px;color:#222;font-weight:600}
.feature-card p{font-size:13px;color:var(--text-light);line-height:1.7;margin:0 0 16px}
.feature-card .more{
  font-size:12px;color:var(--primary);font-weight:600;
  text-transform:uppercase;letter-spacing:1px;
}
.feature-card .more:after{content:" →"}

/* ========== About block ========== */
.about-block{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-block .text .eyebrow{color:var(--primary);font-size:13px;letter-spacing:2px;font-weight:600;text-transform:uppercase}
.about-block h2{font-size:36px;margin:6px 0 20px;color:#222}
.about-block p{color:var(--text-light);line-height:1.85;margin:0 0 22px}
.about-block .media{
  position:relative;border-radius:var(--radius);overflow:hidden;
  aspect-ratio:4/3;background:#1a1a1a;
  background-image:url('../images/factory.png');background-size:cover;background-position:center;
  box-shadow:var(--shadow-md);
}

/* ========== Certificate / Partners ========== */
.cert-grid,.partner-grid{
  display:grid;grid-template-columns:repeat(6,1fr);gap:20px;align-items:center;
  margin-top:30px;
}
.cert-item,.partner-item{
  background:#fff;border-radius:var(--radius);padding:24px 14px;
  display:grid;place-items:center;min-height:88px;
  box-shadow:var(--shadow-sm);
  font-size:13px;color:var(--text-light);font-weight:500;
  transition:.2s;text-align:center;
}
.cert-item:hover,.partner-item:hover{transform:translateY(-3px);color:var(--primary)}

/* ========== News ========== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:30px}
.news-card{
  background:#fff;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);transition:.25s;
  display:flex;flex-direction:column;
}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:transparent}
.news-card .thumb{aspect-ratio:16/10;background:#f0f0f0;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.3s}
.news-card:hover .thumb img{transform:scale(1.05)}
.news-card .body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.news-card .meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.news-card h3{
  font-size:16px;font-weight:600;margin:0 0 10px;color:#222;
  line-height:1.5;
}
.news-card p{font-size:13px;color:var(--text-light);margin:0 0 16px;flex:1}
.news-card .read-more{
  color:var(--primary);font-weight:600;font-size:13px;
  letter-spacing:.5px;
}
.news-card .read-more:after{content:" →"}

/* ========== Form / CTA ========== */
.keep-in-touch{
  padding:70px 24px;
  background:linear-gradient(135deg,#eaf6e9,#fff);
}
.keep-in-touch .box{
  max-width:760px;margin:0 auto;background:#fff;
  padding:42px 44px;border-radius:8px;
  box-shadow:var(--shadow-md);
  border-top:4px solid var(--primary);
}
.keep-in-touch h2{text-align:center;font-size:28px;margin:0 0 8px;color:#222}
.keep-in-touch .lead{
  text-align:center;color:var(--text-light);
  font-size:13px;margin:0 0 28px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:12px;color:var(--text-light);font-weight:500}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:11px 14px;
  border:1px solid var(--border);border-radius:var(--radius);
  font-family:inherit;font-size:14px;color:#333;background:#fff;
  outline:none;transition:.2s;
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(89,187,86,.12);
}
.form-group textarea{min-height:110px;resize:vertical}
.form-actions{text-align:center;margin-top:22px}

/* ========== Footer ========== */
.site-footer{background:#1d2420;color:#b9c2bc;padding:60px 0 0;margin-top:20px}
.site-footer a{color:#b9c2bc}
.site-footer a:hover{color:var(--primary)}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid #2e3833;
}
.footer-col h4{font-size:15px;color:#fff;margin:0 0 18px;font-weight:600;letter-spacing:.5px}
.footer-col p{font-size:13px;line-height:1.8;color:#93a097;margin:0 0 14px}
.footer-col ul li{margin-bottom:10px;font-size:13px}
.footer-col li a{font-size:13px}
.footer-col .social{display:flex;gap:10px;margin-top:14px}
.footer-col .social a{
  width:34px;height:34px;border-radius:50%;background:#2e3833;
  display:grid;place-items:center;color:#b9c2bc;font-size:13px;
  transition:.2s;
}
.footer-col .social a:hover{background:var(--primary);color:#fff}
.footer-contact li{display:flex;gap:10px;align-items:flex-start}
.footer-contact li .ico{color:var(--primary);flex-shrink:0;margin-top:3px}
.site-footer .bottom{
  padding:18px 0;text-align:center;
  font-size:12px;color:#6c766e;
}

/* ========== Floating Widgets ========== */
.floating-contact{
  position:fixed;right:14px;top:45%;transform:translateY(-50%);
  display:flex;flex-direction:column;gap:10px;z-index:80;
}
.floating-contact a{
  width:42px;height:42px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:grid;place-items:center;font-size:16px;
  box-shadow:var(--shadow-md);transition:.2s;
}
.floating-contact a:hover{background:var(--primary-dark);transform:scale(1.08);color:#fff}

/* ========== Carousel helper (simple flex scroll) ========== */
.row-scroll{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding:24px;padding-bottom:10px}
.row-scroll>*{flex:0 0 260px;scroll-snap-align:start}

/* ========== Product detail ========== */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-top:40px}
.product-detail .gallery{
  background:#f7f7f7;border-radius:var(--radius);overflow:hidden;
  aspect-ratio:1/1;display:grid;place-items:center;
}
.product-detail .gallery img{width:100%;height:100%;object-fit:cover}
.product-detail .info .code{font-size:12px;letter-spacing:2px;color:var(--primary);font-weight:600;text-transform:uppercase}
.product-detail .info h1{font-size:28px;margin:6px 0 16px;color:#222;line-height:1.35}
.product-detail .info .lead{color:var(--text-light);line-height:1.8;margin:0 0 24px}
.spec-table{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:28px}
.spec-table th,.spec-table td{padding:10px 14px;border:1px solid var(--border);text-align:left}
.spec-table th{background:var(--bg-soft);color:#333;font-weight:600;width:160px}

.thumb-row{display:flex;gap:10px;margin-top:14px}
.thumb-row div{
  flex:1;aspect-ratio:1/1;background:#f7f7f7;border-radius:var(--radius);overflow:hidden;
  cursor:pointer;border:2px solid transparent;
}
.thumb-row div.active{border-color:var(--primary)}

/* ========== Tabs ========== */
.tabs{border-bottom:1px solid var(--border);display:flex;gap:4px;margin:40px 0 20px}
.tabs .tab{
  padding:12px 22px;font-size:14px;font-weight:500;color:var(--text-light);
  border-bottom:2px solid transparent;cursor:pointer;transition:.2s;
}
.tabs .tab.active{color:var(--primary);border-color:var(--primary)}
.tab-content{display:none;padding:20px 0;color:var(--text-light);line-height:1.85}
.tab-content.active{display:block}

/* ========== Filter sidebar ========== */
.catalog{display:grid;grid-template-columns:240px 1fr;gap:36px;margin-top:40px}
.filter-box{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;height:fit-content;position:sticky;top:100px;
}
.filter-box h4{font-size:14px;letter-spacing:.5px;margin:0 0 12px;color:#222;text-transform:uppercase;font-weight:600}
.filter-box ul{border-bottom:1px solid var(--border);padding-bottom:14px;margin-bottom:14px}
.filter-box ul:last-child{border-bottom:none}
.filter-box li a{
  display:block;padding:7px 0;font-size:13px;color:var(--text-light);
  border-left:2px solid transparent;padding-left:8px;transition:.15s;
}
.filter-box li a:hover,.filter-box li a.active{color:var(--primary);border-left-color:var(--primary);background:var(--bg-soft)}
.filter-box li.sub a{padding-left:22px;font-size:12px}

/* ========== Pagination ========== */
.pagination{display:flex;justify-content:center;gap:6px;margin-top:40px}
.pagination a{
  width:36px;height:36px;border-radius:var(--radius);
  border:1px solid var(--border);display:grid;place-items:center;
  font-size:13px;color:var(--text-light);transition:.15s;
}
.pagination a:hover,.pagination a.active{background:var(--primary);border-color:var(--primary);color:#fff}

/* ========== Contact ========== */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;margin-top:40px}
.contact-info-box{background:var(--bg-soft);padding:36px;border-radius:var(--radius);border-left:4px solid var(--primary)}
.contact-info-box h3{margin:0 0 20px;font-size:20px;color:#222}
.contact-info-box ul li{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--border);align-items:flex-start}
.contact-info-box ul li:last-child{border-bottom:none}
.contact-info-box .ico{
  width:38px;height:38px;border-radius:50%;background:#fff;
  color:var(--primary);display:grid;place-items:center;flex-shrink:0;font-size:14px;
}
.contact-info-box .label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:1px}
.contact-info-box .val{font-size:14px;color:#222;margin-top:2px;font-weight:500}
.map-embed{
  aspect-ratio:16/9;
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  background:#eaf2e5;
}
.map-embed #amap-container{
  position:absolute;inset:0;
  width:100%;height:100%;z-index:2;
}
.map-fallback{
  position:absolute;inset:0;z-index:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:18px;text-align:center;padding:24px;
  background:#eaf2e5 url('../images/map.svg') center/cover no-repeat;
}
.map-fallback i.fa-location-dot{
  font-size:32px;color:var(--primary);
  background:#fff;width:68px;height:68px;border-radius:50%;
  display:grid;place-items:center;box-shadow:var(--shadow-sm);
}
.map-fallback b{color:#222;font-size:15px}

/* ========== Stats ========== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;padding:40px 0}
.stats .num{font-size:40px;font-weight:700;color:var(--primary);line-height:1}
.stats .lbl{font-size:13px;color:var(--text-light);margin-top:6px;letter-spacing:.5px;text-transform:uppercase}

/* ========== Article ========== */
.article{max-width:820px;margin:40px auto}
.article h1{font-size:34px;color:#222;margin:0 0 14px}
.article .meta{color:var(--muted);font-size:13px;margin-bottom:30px;padding-bottom:18px;border-bottom:1px solid var(--border)}
.article p{line-height:1.9;margin:0 0 18px;color:#444}
.article h2,.article h3{color:#222;margin:30px 0 14px}
.article img{margin:24px 0;border-radius:var(--radius)}
.article blockquote{
  border-left:4px solid var(--primary);background:var(--bg-soft);
  padding:16px 22px;margin:24px 0;color:#333;font-style:italic;
}

/* ========== Utilities ========== */
.text-center{text-align:center}
.mt-0{margin-top:0}
.mt-2{margin-top:16px}

/* ========== Responsive ========== */
@media(max-width:1024px){
  /* collapse nav to drawer on tablet / small laptop */
  .mobile-toggle{
    display:grid;place-items:center;
    width:40px;height:40px;font-size:20px;color:#333;
    margin-left:auto;
  }
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:300px;max-width:88vw;
    background:#fff;box-shadow:-6px 0 24px rgba(0,0,0,.12);
    transform:translateX(100%);transition:.25s;
    padding:60px 16px 24px;z-index:200;
    overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav:before{
    content:"";position:fixed;inset:0;z-index:-1;
    background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:.25s;
  }
  .main-nav.open:before{opacity:1;pointer-events:auto}
  .main-nav>ul{flex-direction:column;align-items:stretch;gap:0}
  .main-nav>ul>li{border-bottom:1px solid var(--border)}
  .main-nav a{padding:14px 12px;font-size:15px}
  .main-nav .sub-menu{
    position:static;box-shadow:none;border:none;padding:0 0 10px 12px;
    opacity:1;visibility:visible;transform:none;min-width:0;
  }
  .main-nav .sub-menu a{padding:8px 10px}
  .main-nav li.has-sub>a{display:flex;justify-content:space-between;align-items:center}
  .main-nav .sub-caret{font-size:12px;margin-left:auto}

  .product-grid{grid-template-columns:repeat(3,1fr)!important}
  .features-grid{grid-template-columns:repeat(3,1fr)!important}
  .cert-grid,.partner-grid{grid-template-columns:repeat(4,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)!important}
  .stats{grid-template-columns:repeat(2,1fr)}
  .about-block,.contact-grid,.product-detail{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero{height:clamp(460px,56.25vw,560px)}
  .hero .hero-content{padding:60px 76px 96px 24px}
  .hero h1{font-size:40px}
  .catalog{grid-template-columns:1fr}
  .filter-box{position:static}
}

@media(max-width:768px){
  .header-top{display:none}
  .header-main{padding:12px 16px;gap:10px}
  .container{padding:0 16px}
  .search-box{display:none}                 /* 让 header 更紧凑 */
  .logo-img{width:150px;height:46px}
  .logo-text{font-size:16px}
  .logo-text small{font-size:9px}
  .logo-mark{width:38px;height:38px;font-size:17px}

  .section{padding:44px 0}
  .section-title{font-size:26px}
  .section-subtitle{margin-bottom:28px;font-size:13px}

  .hero{height:clamp(480px,112vw,620px)}
  .hero:before{background:linear-gradient(90deg,rgba(15,24,20,.82),rgba(15,24,20,.45))}
  .hero-slide img{object-position:62% center}
  .hero .hero-content{width:100vw;min-width:0;max-width:100vw;padding:46px 16px 88px;margin:0}
  .hero h1{font-size:28px;line-height:1.2;max-width:calc(100vw - 32px);overflow-wrap:anywhere}
  .hero p,.hero-ctas{width:calc(100vw - 32px);max-width:calc(100vw - 32px)}
  .hero p{font-size:14px;overflow-wrap:anywhere}
  .hero .eyebrow{font-size:11px;padding:4px 12px}
  .hero-ctas{flex-direction:column;align-items:stretch}
  .hero-ctas .btn{width:auto}
  .hero-controls{bottom:18px;gap:10px}
  .hero-arrow{width:38px;height:38px}

  .page-banner{min-height:180px}
  .page-banner .container{padding:40px 16px}
  .page-banner h1{font-size:26px}

  .product-grid{grid-template-columns:repeat(2,1fr)!important;gap:14px}
  .product-card h3{min-height:auto;font-size:12px;padding:10px 10px 14px}
  .features-grid{grid-template-columns:repeat(2,1fr)!important;gap:14px}
  .feature-card{padding:24px 14px}
  .cert-grid,.partner-grid{grid-template-columns:repeat(3,1fr);gap:12px}
  .news-grid{grid-template-columns:1fr!important;gap:18px}
  .stats{grid-template-columns:repeat(2,1fr);gap:18px;padding:28px 0}
  .stats .num{font-size:30px}

  .about-block{gap:28px}
  .about-block h2{font-size:28px}

  /* forms */
  .form-grid{grid-template-columns:1fr;gap:12px}
  .keep-in-touch{padding:50px 16px}
  .keep-in-touch .box{padding:28px 20px}
  .keep-in-touch h2{font-size:22px}

  /* product detail */
  .product-detail{gap:24px}
  .product-detail .info h1{font-size:22px}
  .tabs{overflow-x:auto;flex-wrap:nowrap;gap:0}
  .tabs .tab{padding:10px 14px;font-size:13px;white-space:nowrap;flex-shrink:0}
  .spec-table th,.spec-table td{padding:8px 10px;font-size:13px}
  .spec-table th{width:110px}
  .thumb-row{gap:6px}

  /* filter sidebar */
  .filter-box{padding:16px}

  .contact-info-box{padding:24px}
  .article{padding:0 4px}
  .article h1{font-size:24px}

  /* footer */
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding:40px 0 0}

  /* floating */
  .floating-contact{right:10px}
  .floating-contact a{width:38px;height:38px;font-size:14px}
}

@media(max-width:480px){
  .product-grid{grid-template-columns:1fr!important}
  .product-card h3{min-height:auto}
  .features-grid{grid-template-columns:1fr!important}
  .cert-grid,.partner-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:1fr}
  .hero h1{font-size:26px}
  .hero{height:560px}
  .hero-slide img{object-position:66% center}
  .section-title{font-size:22px}
  .page-banner h1{font-size:22px}
  .btn{padding:9px 20px;font-size:13px}
  .btn--lg{padding:12px 28px;font-size:14px}
}

@media(prefers-reduced-motion:reduce){
  .hero-slide{transition:none;transform:none}
}