*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  font-family:'Inter',sans-serif;
  background:#f4f8ff;
  color:#0f172a;
  overflow-x:hidden;
  min-height:100vh;
}

/* HEADER */

.header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:72px;
  padding:14px 6%;
  display:flex;
  justify-content:space-between;
  align-items:center;
  background:rgba(255,255,255,0.08);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,0.12);
  z-index:999;
}

.logo{
  display:flex;
  align-items:center;
  gap:16px;
}

.logo img{
  width:46px;
  height:46px;
}

.logo-text{
  font-size:26px;
  font-weight:800;
  color:#fff;
  white-space:nowrap;
}

.nav{
  display:flex;
  align-items:center;
  gap:28px;
}

.nav a{
  color:#fff;
  text-decoration:none;
  font-size:15px;
  font-weight:700;
  position:relative;
  transition:.3s;
}

.nav a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-6px;
  width:0;
  height:2px;
  background:#60a5fa;
  transition:.3s;
}

.nav a:hover::after{
  width:100%;
}

.menu-btn{
  display:none;
  color:#fff;
  font-size:30px;
  cursor:pointer;
}

/* HERO */

.hero{
  width:100%;
  min-height:82vh;
  position:relative;

  background:
  linear-gradient(
  90deg,
  rgba(2,10,28,0.62),
  rgba(5,40,90,0.32)
  ),
  url("https://images.unsplash.com/photo-1519389950473-47ba0277781c?auto=format&fit=crop&w=1800&q=90");

  background-size:cover;
  background-position:center;
  overflow:hidden;
}

.hero::before{
  content:"";
  position:absolute;
  inset:0;

  background:
  radial-gradient(circle at 72% 42%,rgba(29,155,240,0.18),transparent 35%),
  linear-gradient(120deg,rgba(29,155,240,0.08),transparent 50%);
}

.hero-container{
  display:flex;
  align-items:center;
  justify-content:flex-start;
  width:100%;
  padding:140px 7% 90px;
}

.hero-content{
  position:relative;
  z-index:5;
  max-width:780px;
}

.small-title{
  color:#38bdf8;
  font-size:13px;
  font-weight:800;
  letter-spacing:2px;
  margin-bottom:22px;
}

.hero h1{
  font-size:clamp(42px,4.5vw,64px);
  line-height:1.05;
  color:#fff;
  margin-bottom:26px;
}

.hero-desc{
  max-width:650px;
  color:#f1f5f9;
  line-height:1.9;
  font-size:18px;
  margin-bottom:42px;
}

/* BUTTONS */

.hero-buttons{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}

.reply-text{
  margin-top:22px;
  color:#dbeafe;
  font-size:15px;
  letter-spacing:0.5px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:16px 38px;
  border-radius:50px;
  background:linear-gradient(135deg,#3b82f6,#2563eb);
  color:#fff;
  font-weight:700;
  text-decoration:none;
  transition:.3s;
  border:none;
}

.btn:hover{
  transform:translateY(-3px);
  box-shadow:0 10px 30px rgba(59,130,246,0.35);
}
.primary{
  background:linear-gradient(135deg,#1d9bf0,#006cff);
  color:#fff;
  box-shadow:0 16px 35px rgba(29,155,240,0.28);
}

.primary:hover{
  transform:translateY(-4px);
}

.secondary{
  background:transparent;
  border:1px solid rgba(255,255,255,0.45);
  color:#fff;
}

.secondary:hover{
  background:#fff;
  color:#0f172a;
}

/* COMMON */

.section{
  padding:80px 5%;
}

.section-top{
  text-align:center;
  margin-bottom:38px;
}

.section-top p,
.blue-text{
  color:#1d9bf0;
  font-size:13px;
  font-weight:800;
  letter-spacing:1.5px;
  margin-bottom:12px;
}

.section-top h2{
  font-size:clamp(32px,4vw,46px);
  font-weight:900;
}

/* PRODUCTS */

#products{
  padding-top:50px;
  padding-bottom:50px;
}

.products-slider{
  width:100%;
  position:relative;
  overflow:hidden;
}

.category-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}

.category-grid::-webkit-scrollbar{
  display:none;
}

.category-card{
  background:#fff;
  border-radius:8px;
  overflow:hidden;
  border:1px solid #edf2f7;
  transition:.3s;
}

.category-card:hover{
  transform:
  perspective(1200px)
  translateY(-8px)
  scale(1.01);

  box-shadow:
  0 20px 50px rgba(29,155,240,0.18);
}

.category-card img{
  width:100%;
  height:160px;
  object-fit:cover;
  display:block;
  transition:.35s;
}

.category-card:hover img{
  transform:scale(1.05);
}

.category-info{
  padding:16px 18px 20px;
  text-align:center;
}

.category-info h3{
  font-size:18px;
  margin-bottom:10px;
}

.category-info p{
  color:#64748b;
  line-height:1.7;
  font-size:14px;
}

.product-link{
  display:inline-block;
  margin-top:18px;
  color:#1d9bf0;
  font-weight:700;
  text-decoration:none;
}

/* ABOUT */

.about-section,
.oem-section,
.contact-section{
  padding:100px 7%;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}

.about-section,
.contact-section{
  background:#fff;
}

.about-left{
  overflow:hidden;
  border-radius:18px;
}

.about-left video{
  width:100%;
  height:360px;
  object-fit:cover;
  display:block;
  border-radius:18px;
}

.about-right h2,
.oem-left h2,
.contact-left h2{
  font-size:clamp(34px,4vw,50px);
  line-height:1.15;
  margin-bottom:24px;
}

.about-desc,
.oem-left p{
  color:#64748b;
  line-height:1.9;
  margin-bottom:34px;
}

.about-boxes{
  display:flex;
  gap:18px;
}

.mini-box{
  flex:1;
  background:linear-gradient(180deg,#f5faff,#eef6ff);
  border-radius:18px;
  padding:28px 20px;
  text-align:center;
  border:1px solid #dbeafe;
}

.mini-box h3{
  color:#1d9bf0;
  font-size:36px;
  margin-bottom:8px;
}

/* WHY */

.why-section{
  padding:110px 7%;
  background:
  linear-gradient(
  135deg,
  rgba(8,20,45,0.88),
  rgba(25,80,150,0.82)
  ),
  url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1800&q=90");
  background-size:105%;
  background-position:center;
}

.white p,
.white h2{
  color:#fff;
}

.why-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}

.why-card{
  padding:32px;
  border-radius:18px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.12);
  backdrop-filter:blur(14px);
  transition:.35s;
}

.why-card:hover{
  transform:translateY(-8px);
}

.why-card h3{
  color:#fff;
  font-size:22px;
  margin-bottom:14px;
}

.why-card p{
  color:#dbeafe;
  line-height:1.8;
}

/* OEM */

.oem-section{
  background:#f4f8ff;
}

.oem-box{
  background:#fff;
  border-radius:20px;
  padding:50px;
  box-shadow:0 18px 50px rgba(15,23,42,0.08);
  border:1px solid #e0f2fe;
}

  /* CONTACT */

.contact-section{
  background:#fff;
}

form{
  display:flex;
  flex-direction:column;
  gap:18px;
}

input,
textarea{
  width:100%;
  padding:18px 20px;
  border:1px solid #dbeafe;
  border-radius:18px;
  background:#f8fbff;
  font-size:15px;
  outline:none;
}

textarea{
  min-height:160px;
  resize:vertical;
}

button{
  height:56px;
  border:none;
  border-radius:999px;
  background:linear-gradient(135deg,#1d9bf0,#006cff);
  color:#fff;
  font-size:16px;
  font-weight:800;
  cursor:pointer;
  transition:.35s;
}

button:hover{
  transform:translateY(-4px);
}

.contact-card{
  background:#f8fbff;
  border-radius:18px;
  padding:40px;
  border:1px solid #dbeafe;
  box-shadow:0 20px 50px rgba(15,23,42,0.08);
}

.contact-card h3{
  font-size:28px;
  margin-bottom:24px;
}

.contact-card p{
  color:#475569;
  line-height:1.9;
  margin-bottom:24px;
}

/* BANNERS */

.oem-banner,
.factory-strength,
.production-process,
.products-banner{
  width:100%;
  padding:40px 7%;
}

.oem-banner img,
.factory-strength img,
.production-process img,
.products-banner img{

  width:100%;

  border-radius:18px;

  display:block;

  box-shadow:0 10px 30px rgba(0,0,0,0.08);

  object-fit:contain;

  background:#fff;

}

.production-process img{
  max-height:420px;
}

/* CERTIFICATE */

.cert-banner{
  background:#f4f8ff;
  overflow:hidden;
}

.cert-overlay{
  text-align:center;
  padding:60px 20px 40px;
}

.cert-overlay p{
  color:#3b82f6;
  font-weight:800;
  margin-bottom:12px;
}

.cert-overlay h2{
  font-size:52px;
  font-weight:900;
}

.cert-banner img{
  width:100%;
  max-width:1400px;
  max-height:420px;
  object-fit:contain;
  margin:auto;
  display:block;
  border-radius:18px;
}

/* PRODUCT PAGE */

.product-hero{
  position:relative;
  width:100%;
  min-height:60vh;

  background:
  linear-gradient(
  120deg,
  rgba(2,10,28,0.75),
  rgba(5,40,90,0.45)
  ),
  url("products-banner.jpg");

  background-size:cover;
  background-position:center;

  display:flex;
  align-items:center;
  justify-content:center;

  text-align:center;

  overflow:hidden;
}

.product-hero-content{
  position:relative;
  z-index:2;
  padding:140px 20px 100px;
}

.product-hero-content p{
  color:#38bdf8;
  font-size:14px;
  font-weight:800;
  letter-spacing:2px;
  margin-bottom:20px;
}

.product-hero-content h1{
  color:#fff;
  font-size:clamp(42px,5vw,72px);
  line-height:1.05;
  margin-bottom:24px;
}

.product-hero-content span{
  color:#dbeafe;
  font-size:18px;
}

.product-section{
  padding:90px 7%;
}

.product-filter-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  max-width:1280px;
  margin:0 auto 34px;
  padding:14px;
  background:rgba(255,255,255,0.86);
  border:1px solid rgba(148,163,184,0.22);
  border-radius:20px;
  box-shadow:0 16px 40px rgba(15,23,42,0.07);
  backdrop-filter:blur(14px);
}

.product-filter-buttons{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.product-filter-btn{
  min-height:40px;
  padding:0 16px;
  border:1px solid rgba(148,163,184,0.28);
  border-radius:999px;
  background:#fff;
  color:#475569;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  transition:.25s;
}

.product-filter-btn:hover{
  color:#0f172a;
  border-color:rgba(29,155,240,0.42);
  box-shadow:0 10px 24px rgba(29,155,240,0.12);
  transform:translateY(-1px);
}

.product-filter-btn.is-active{
  color:#fff;
  border-color:transparent;
  background:linear-gradient(135deg,#1d9bf0,#2563eb);
  box-shadow:0 12px 28px rgba(37,99,235,0.22);
}

.product-search{
  position:relative;
  display:flex;
  align-items:center;
  flex:0 0 280px;
  min-width:220px;
}

.product-search-icon{
  position:absolute;
  left:16px;
  width:14px;
  height:14px;
  border:2px solid #60a5fa;
  border-radius:50%;
  pointer-events:none;
}

.product-search-icon::after{
  content:"";
  position:absolute;
  right:-6px;
  bottom:-5px;
  width:7px;
  height:2px;
  background:#60a5fa;
  border-radius:999px;
  transform:rotate(45deg);
}

.product-search input{
  width:100%;
  height:44px;
  padding:0 18px 0 44px;
  border:1px solid rgba(148,163,184,0.28);
  border-radius:999px;
  outline:none;
  background:#f8fbff;
  color:#0f172a;
  font-family:inherit;
  font-size:14px;
  font-weight:600;
  transition:.25s;
}

.product-search input:focus{
  border-color:rgba(29,155,240,0.55);
  background:#fff;
  box-shadow:0 0 0 4px rgba(29,155,240,0.1);
}

.product-empty-state{
  grid-column:1 / -1;
  padding:42px 24px;
  text-align:center;
  background:#fff;
  border:1px solid rgba(148,163,184,0.22);
  border-radius:20px;
  box-shadow:0 12px 30px rgba(15,23,42,0.06);
}

.product-empty-state h3{
  margin-bottom:8px;
  color:#0f172a;
  font-size:22px;
}

.product-empty-state p{
  color:#64748b;
}

.category-grid.is-loading,
.product-grid.is-loading,
.related-products-grid.is-loading{
  min-height:320px;
}

.category-grid.is-loading::before,
.product-grid.is-loading::before,
.related-products-grid.is-loading::before{
  content:"";
  grid-column:1 / -1;
  min-height:320px;
  border-radius:20px;
  border:1px solid rgba(148,163,184,0.2);
  background:
    linear-gradient(90deg,transparent,rgba(255,255,255,.74),transparent),
    linear-gradient(180deg,#eef6ff,#ffffff);
  background-size:220% 100%,100% 100%;
  box-shadow:0 12px 30px rgba(15,23,42,0.06);
  animation:xiqiSkeleton 1.1s ease-in-out infinite;
}

.detail-page.is-loading{
  min-height:720px;
}

.detail-page.is-loading::before,
.detail-page.is-loading::after{
  content:"";
  display:block;
  min-height:520px;
  border-radius:28px;
  border:1px solid rgba(148,163,184,0.2);
  background:
    linear-gradient(90deg,transparent,rgba(255,255,255,.7),transparent),
    linear-gradient(180deg,#eaf4ff,#ffffff);
  background-size:220% 100%,100% 100%;
  box-shadow:0 20px 54px rgba(15,23,42,0.08);
  animation:xiqiSkeleton 1.1s ease-in-out infinite;
}

@keyframes xiqiSkeleton{
  0%{
    background-position:120% 0,0 0;
  }
  100%{
    background-position:-120% 0,0 0;
  }
}

.product-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
}

.product-card{
  background:#fff;
  border-radius:20px;
  overflow:hidden;

  border:1px solid #e2e8f0;

  transition:.35s;

  box-shadow:
  0 10px 30px rgba(15,23,42,0.06);
}

.product-card:hover{
  transform:translateY(-8px);

  box-shadow:
  0 20px 50px rgba(29,155,240,0.15);
}

.product-card img{
  width:100%;
  height:220px;
  object-fit:cover;
  display:block;
}

.product-info{
  padding:24px;
  text-align:center;
}

.product-info h3{
  font-size:20px;
  margin-bottom:16px;
}

.product-info a{
  color:#1d9bf0;
  font-weight:700;
  text-decoration:none;
}

.product-oem{
  padding:100px 7%;

  background:
  linear-gradient(
  135deg,
  rgba(8,20,45,0.92),
  rgba(25,80,150,0.88)
  );
}

.oem-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}

.oem-card{
  background:rgba(255,255,255,0.08);

  border:1px solid rgba(255,255,255,0.12);

  border-radius:20px;

  padding:36px 28px;

  backdrop-filter:blur(14px);

  transition:.35s;
}

.oem-card:hover{
  transform:translateY(-8px);
}

.oem-card h3{
  color:#fff;
  font-size:24px;
  margin-bottom:16px;
}

.oem-card p{
  color:#dbeafe;
  line-height:1.8;
}

.product-contact{
  padding:100px 7%;
}

.product-contact-box{
  background:#fff;

  border-radius:30px;

  padding:70px 50px;

  text-align:center;

  box-shadow:
  0 20px 60px rgba(15,23,42,0.08);
}

.product-contact-box h2{
  font-size:48px;
  margin-bottom:20px;
}

.product-contact-box p{
  color:#64748b;
  margin-bottom:32px;
  font-size:18px;
}

@media(max-width:1100px){

  .product-grid{
    grid-template-columns:repeat(2,1fr);
  }

  .product-filter-bar{
    align-items:flex-start;
    flex-direction:column;
  }

  .product-search{
    flex:0 1 auto;
    width:100%;
  }

  .oem-grid{
    grid-template-columns:repeat(2,1fr);
  }

}

@media(max-width:700px){

  .product-grid{
    grid-template-columns:1fr;
  }

  .product-filter-bar{
    margin-bottom:24px;
    padding:12px;
    border-radius:18px;
  }

  .product-filter-buttons{
    flex-wrap:nowrap;
    width:100%;
    overflow-x:auto;
    padding-bottom:2px;
    scrollbar-width:none;
  }

  .product-filter-buttons::-webkit-scrollbar{
    display:none;
  }

  .product-filter-btn{
    flex:0 0 auto;
    min-height:38px;
    padding:0 14px;
    font-size:13px;
  }

  .product-search{
    min-width:0;
  }

  .oem-grid{
    grid-template-columns:1fr;
  }

  .product-hero-content h1{
    font-size:46px;
  }

}

/* DELIVERY MOBILE AND PERFORMANCE TUNING */

@media(max-width:760px){

  .header{
    height:66px;
    padding:12px 5%;
  }

  .logo img{
    width:38px;
    height:38px;
  }

  .logo-text{
    max-width:210px;
    overflow:hidden;
    font-size:17px;
    text-overflow:ellipsis;
  }

  .menu-btn{
    display:block;
    min-width:44px;
    min-height:44px;
    line-height:44px;
    text-align:center;
  }

  .nav{
    position:absolute;
    top:66px;
    left:0;
    width:100%;
    padding:14px 5% 18px;
    background:rgba(7,18,38,.96);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    flex-direction:column;
    align-items:flex-start;
    gap:12px;
    display:none;
  }

  .nav.active{
    display:flex;
  }

  .nav a{
    width:100%;
    min-height:42px;
    display:flex;
    align-items:center;
  }

  .hero{
    min-height:620px;
    padding:96px 5% 70px;
  }

  .hero h1{
    font-size:clamp(34px,10vw,44px);
    line-height:1.12;
  }

  .hero-desc{
    max-width:100%;
    font-size:15px;
    line-height:1.75;
  }

  .hero-buttons{
    width:100%;
    gap:12px;
  }

  .hero-buttons .btn{
    width:100%;
    min-height:50px;
  }

  #products .category-grid,
  .product-grid,
  .factory-grid,
  .related-grid{
    grid-template-columns:1fr;
  }

  #products .category-card{
    height:312px;
    box-shadow:0 12px 28px rgba(15,23,42,.08);
  }

  #products .category-card img{
    height:240px;
    flex-basis:240px;
  }

  .detail-page{
    grid-template-columns:1fr;
    padding:112px 18px 70px;
    gap:34px;
  }

  .detail-main-image img{
    height:340px;
  }

  .detail-info,
  .detail-features{
    grid-template-columns:1fr;
  }

  .detail-buttons .btn{
    width:100%;
    min-height:54px;
  }

  input,
  textarea,
  select{
    min-height:50px;
    font-size:16px;
  }

  .inquiry-form button{
    min-height:54px;
  }

  .whatsapp-container{
    right:16px;
    bottom:16px;
  }

  .whatsapp{
    width:56px;
    height:56px;
    min-width:56px;
    min-height:56px;
    box-shadow:0 10px 24px rgba(37,211,102,.24);
  }

  .category-card,
  .product-card,
  .related-card,
  .feature-item,
  .info-row{
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
  }
}

@media(prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    scroll-behavior:auto !important;
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
}

/* PRODUCT DETAIL PAGE */

.detail-page{
  padding:140px 7% 100px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:70px;
  align-items:start;
  background:#fff;
}

.detail-main-image{
  background:#f8fbff;
  border-radius:24px;
  overflow:hidden;
  border:1px solid #e2e8f0;
}

.detail-main-image img{
  width:100%;
  height:520px;
  object-fit:cover;
  display:block;
}

.detail-gallery{
  margin-top:24px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}

.detail-gallery img{
  width:100%;
  height:110px;
  object-fit:cover;
  border-radius:16px;
  cursor:pointer;
  border:1px solid #e2e8f0;
  transition:.3s;
}

.detail-gallery img:hover{
  transform:translateY(-4px);
}

.detail-tag{
  color:#1d9bf0;
  font-size:14px;
  font-weight:800;
  letter-spacing:2px;
  margin-bottom:18px;
}

.detail-right h1{
  font-size:clamp(40px,4vw,58px);
  line-height:1.08;
  margin-bottom:28px;
}

.detail-desc{
  color:#64748b;
  line-height:1.9;
  font-size:17px;
  margin-bottom:34px;
}

.detail-features{
  display:flex;
  flex-direction:column;
  gap:14px;
  margin-bottom:38px;
}

.feature-item{
  color:#0f172a;
  font-weight:600;
}

.detail-info{
  border-top:1px solid #e2e8f0;
  border-bottom:1px solid #e2e8f0;
  margin-bottom:40px;
}

.info-row{
  display:flex;
  justify-content:space-between;
  padding:18px 0;
  border-bottom:1px solid #edf2f7;
}

.info-row:last-child{
  border-bottom:none;
}

.info-row span{
  color:#64748b;
}

.info-row strong{
  color:#0f172a;
}

.detail-buttons{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
}

.detail-factory{
  padding:100px 7%;
  background:#f4f8ff;
}

.factory-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}

.factory-box{
  background:#fff;
  border-radius:22px;
  padding:38px 30px;
  border:1px solid #e2e8f0;
  transition:.35s;
}

.factory-box:hover{
  transform:translateY(-8px);
  box-shadow:0 18px 40px rgba(15,23,42,0.08);
}

.factory-box h3{
  font-size:24px;
  margin-bottom:16px;
}

.factory-box p{
  color:#64748b;
  line-height:1.8;
}

@media(max-width:1100px){

  .detail-page{
    grid-template-columns:1fr;
  }

  .factory-grid{
    grid-template-columns:repeat(2,1fr);
  }

}

@media(max-width:700px){

  .factory-grid{
    grid-template-columns:1fr;
  }

  .detail-main-image img{
    height:380px;
  }

  .detail-gallery{
    grid-template-columns:repeat(2,1fr);
  }

  .detail-right h1{
    font-size:42px;
  }

}

/* FOOTER */

.footer{
  background:#020d1f;
  padding:80px 7% 40px;
  color:#fff;
}

.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
}

.footer-col{
  display:flex;
  flex-direction:column;
}

.footer-logo{
  font-size:30px;
  font-weight:900;
  margin-bottom:18px;
}

.footer-desc{
  color:#94a3b8;
  line-height:1.9;
  max-width:320px;
}

.footer-col h3{
  font-size:18px;
  margin-bottom:20px;
}

.footer-col a{
  color:#94a3b8;
  text-decoration:none;
  margin-bottom:14px;
  transition:.3s;
}

.footer-col a:hover{
  color:#38bdf8;
}

.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);
  margin-top:50px;
  padding-top:24px;
  text-align:center;
  color:#64748b;
  font-size:14px;
}

@media(max-width:900px){

  .footer-grid{
    grid-template-columns:1fr 1fr;
  }

}

@media(max-width:600px){

  .footer-grid{
    grid-template-columns:1fr;
  }

}

/* WHATSAPP */

.whatsapp-container{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:9999;
  display:flex;
  align-items:center;
  gap:14px;
}

.whatsapp{
  width:68px;
  height:68px;
  border-radius:50%;
  background:#25d366;
  display:flex;
  justify-content:center;
  align-items:center;
  box-shadow:0 12px 30px rgba(37,211,102,0.35);
  transition:.3s;
}

.whatsapp:hover{
  transform:scale(1.08);
}

.whatsapp img{
  width:34px;
  height:34px;
}

.whatsapp-tooltip{
  background:#fff;
  padding:14px 18px;
  border-radius:18px;
  font-size:14px;
  font-weight:600;
  line-height:1.6;
  box-shadow:0 10px 30px rgba(0,0,0,0.08);
}

/* MOBILE */

@media(max-width:950px){

  .menu-btn{
    display:block;
  }

  .category-grid{
    grid-template-columns:1fr 1fr;
  }

  .nav{
    position:absolute;
    top:72px;
    left:0;
    width:100%;
    background:rgba(10,20,40,0.96);
    flex-direction:column;
    align-items:flex-start;
    padding:28px 7%;
    display:none;
  }

  .nav.active{
    display:flex;
  }

  .about-section,
  .oem-section,
  .contact-section,
  .why-grid{
    grid-template-columns:1fr;
  }

  .hero-container{
    padding-top:130px;
  }

}

@media(max-width:520px){

  .hero h1{
    font-size:42px;
  }

  .hero-desc{
    font-size:15px;
  }

  .btn{
    width:100%;
  }

  .hero-buttons{
    width:100%;
  }

  .category-grid{
      grid-template-columns:1fr;
}
  
  .about-boxes{
    flex-direction:column;
  }

  .whatsapp-tooltip{
    display:none;
  }

  .footer-logo{
    font-size:24px;
  }

}

/* LIGHT ENHANCEMENTS */

.header{
  background:rgba(7,18,38,0.34);
  border-bottom:1px solid rgba(255,255,255,0.08);
  box-shadow:0 10px 34px rgba(2,8,23,0.12);
  transition:background .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.header.is-scrolled{
  background:rgba(7,18,38,0.72);
  border-bottom-color:rgba(148,163,184,0.18);
  box-shadow:0 18px 42px rgba(2,8,23,0.2);
}

.logo{
  filter:drop-shadow(0 8px 18px rgba(14,165,233,0.18));
}

.logo img{
  border-radius:12px;
  box-shadow:0 8px 22px rgba(15,23,42,0.22);
}

.logo-text{
  font-weight:760;
  letter-spacing:0;
}

.product-hero{
  min-height:520px;
  height:clamp(500px,52vw,550px);
  isolation:isolate;
  background:
    linear-gradient(120deg,rgba(5,12,28,.86),rgba(15,40,72,.58) 48%,rgba(8,16,32,.82)),
    url("products-banner.jpg");
  background-size:cover;
  background-position:center;
}

.product-hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background:inherit;
  filter:blur(2px) saturate(1.08);
  transform:scale(1.015);
  opacity:.56;
}

.product-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:
    radial-gradient(circle at 50% 18%,rgba(56,189,248,.28),transparent 26%),
    radial-gradient(circle at 18% 72%,rgba(37,99,235,.22),transparent 26%),
    linear-gradient(180deg,rgba(2,6,23,.2),rgba(2,6,23,.34));
  pointer-events:none;
}

.product-hero-overlay{
  position:absolute;
  inset:0;
  z-index:1;
  background:
    linear-gradient(90deg,rgba(2,6,23,.7),rgba(15,23,42,.28),rgba(2,6,23,.68)),
    linear-gradient(180deg,rgba(2,6,23,.18),rgba(2,6,23,.54));
  backdrop-filter:blur(1px);
  -webkit-backdrop-filter:blur(1px);
}

.product-hero-content{
  max-width:760px;
  padding:150px 24px 92px;
  text-shadow:0 18px 42px rgba(2,6,23,.35);
}

.product-hero-content p{
  margin-bottom:16px;
  color:#7dd3fc;
  font-size:12px;
  font-weight:700;
  letter-spacing:3.6px;
}

.product-hero-content h1{
  font-size:clamp(32px,3.35vw,46px);
  line-height:1.16;
  margin-bottom:18px;
  font-weight:760;
  letter-spacing:0;
}

.product-hero-content span{
  display:block;
  color:#bde9ff;
  font-size:14px;
  font-weight:600;
  letter-spacing:2.8px;
  line-height:1.9;
  text-transform:uppercase;
}

.product-hero-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  margin-top:30px;
  padding:0 26px;
  border-radius:999px;
  color:#fff;
  background:linear-gradient(135deg,#38bdf8,#2563eb);
  box-shadow:0 16px 42px rgba(37,99,235,.34);
  font-size:14px;
  font-weight:800;
  text-decoration:none;
  transition:transform .28s ease, box-shadow .28s ease, filter .28s ease;
}

.product-hero-btn:hover{
  transform:translateY(-3px);
  filter:saturate(1.08);
  box-shadow:0 22px 54px rgba(56,189,248,.42);
}

.product-hero:hover{
  background-position:center 48%;
}

/* PRODUCT DETAIL PREMIUM ENHANCEMENTS */

body:has(.detail-page){
  background:
    radial-gradient(circle at 12% 12%,rgba(56,189,248,.16),transparent 28%),
    radial-gradient(circle at 88% 18%,rgba(37,99,235,.12),transparent 30%),
    linear-gradient(180deg,#eef6ff 0%,#f8fbff 42%,#eef5fb 100%);
}

.detail-page{
  max-width:1280px;
  margin:0 auto;
  padding:156px 32px 112px;
  gap:76px;
  background:transparent;
}

.detail-main-image{
  position:relative;
  border-radius:28px;
  background:
    linear-gradient(145deg,rgba(15,23,42,.96),rgba(15,54,88,.88)),
    radial-gradient(circle at 30% 20%,rgba(56,189,248,.22),transparent 34%);
  border:1px solid rgba(125,211,252,.24);
  box-shadow:
    0 28px 70px rgba(15,23,42,.2),
    0 0 42px rgba(56,189,248,.12);
}

.detail-main-image::after{
  content:"";
  position:absolute;
  inset:1px;
  border-radius:27px;
  background:linear-gradient(135deg,rgba(255,255,255,.12),transparent 38%);
  pointer-events:none;
}

.detail-main-image img{
  height:500px;
  transition:transform .45s ease, opacity .3s ease, filter .35s ease;
}

.detail-main-image:hover img{
  transform:scale(1.035);
  filter:saturate(1.05) contrast(1.03);
}

.detail-main-image img.is-swapping{
  animation:detailImageSwap .38s ease;
}

@keyframes detailImageSwap{
  from{
    opacity:.45;
    transform:scale(.985);
  }
  to{
    opacity:1;
    transform:scale(1);
  }
}

.detail-gallery{
  gap:16px;
}

.detail-gallery img{
  border-radius:18px;
  border:1px solid rgba(14,165,233,.22);
  box-shadow:0 14px 32px rgba(15,23,42,.08);
  transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

.detail-gallery img:hover{
  transform:translateY(-5px) scale(1.02);
  border-color:rgba(56,189,248,.56);
  box-shadow:0 18px 42px rgba(37,99,235,.16);
}

.detail-tag{
  color:#0ea5e9;
  letter-spacing:3px;
}

.detail-right h1{
  max-width:620px;
  font-size:clamp(34px,3.6vw,48px);
  line-height:1.14;
  font-weight:760;
  letter-spacing:0;
  margin-bottom:22px;
}

.detail-desc{
  max-width:620px;
  color:#516173;
  font-size:16px;
  line-height:1.85;
  margin-bottom:22px;
}

.detail-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:0 0 30px;
}

.detail-badges span{
  display:inline-flex;
  align-items:center;
  min-height:34px;
  padding:0 14px;
  border:1px solid rgba(14,165,233,.2);
  border-radius:999px;
  color:#0369a1;
  background:rgba(224,242,254,.72);
  box-shadow:0 10px 24px rgba(14,165,233,.08);
  font-size:13px;
  font-weight:800;
}

.detail-features{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
}

.feature-item{
  position:relative;
  padding:15px 16px 15px 46px;
  border:1px solid rgba(191,219,254,.72);
  border-radius:16px;
  background:rgba(255,255,255,.76);
  box-shadow:0 12px 28px rgba(15,23,42,.06);
  transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

.feature-item::before{
  content:"✓";
  position:absolute;
  left:15px;
  top:50%;
  width:22px;
  height:22px;
  border-radius:50%;
  transform:translateY(-50%);
  display:grid;
  place-items:center;
  color:#fff;
  background:linear-gradient(135deg,#38bdf8,#2563eb);
  font-size:13px;
  font-weight:900;
}

.feature-item:hover{
  transform:translateY(-4px);
  border-color:rgba(56,189,248,.52);
  box-shadow:0 18px 40px rgba(37,99,235,.12);
}

.detail-info{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  border:0;
  margin-bottom:38px;
}

.info-row{
  display:grid;
  gap:8px;
  padding:18px;
  border:1px solid rgba(191,219,254,.76);
  border-radius:18px;
  background:rgba(255,255,255,.82);
  box-shadow:0 14px 32px rgba(15,23,42,.07);
  transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

.info-row:hover{
  transform:translateY(-4px);
  border-color:rgba(56,189,248,.52);
  box-shadow:0 20px 44px rgba(37,99,235,.12);
}

.info-row span{
  color:#64748b;
  font-size:12px;
  font-weight:800;
  letter-spacing:1.4px;
  text-transform:uppercase;
}

.info-row strong{
  color:#0f172a;
  font-size:17px;
}

.detail-buttons .btn{
  min-height:52px;
  padding:0 28px;
  border-radius:999px;
}

.detail-buttons .primary{
  background:linear-gradient(135deg,#38bdf8,#2563eb);
  box-shadow:0 18px 44px rgba(37,99,235,.3);
}

.detail-buttons .primary:hover{
  transform:translateY(-4px);
  box-shadow:0 24px 58px rgba(56,189,248,.38);
}

.detail-buttons .secondary{
  color:#075985;
  background:rgba(255,255,255,.78);
  border:1px solid rgba(14,165,233,.22);
  box-shadow:0 14px 34px rgba(15,23,42,.08);
}

.related-products{
  max-width:1280px;
  margin:0 auto;
  padding:0 32px 112px;
}

.product-video-section{
  max-width:1280px;
  margin:0 auto;
  padding:0 32px 92px;
}

.product-video-box{
  overflow:hidden;
  border:1px solid rgba(125,211,252,.24);
  border-radius:28px;
  background:
    linear-gradient(145deg,rgba(15,23,42,.96),rgba(15,54,88,.88)),
    radial-gradient(circle at 30% 20%,rgba(56,189,248,.22),transparent 34%);
  box-shadow:
    0 28px 70px rgba(15,23,42,.18),
    0 0 42px rgba(56,189,248,.12);
}

.product-video-box video{
  width:100%;
  max-height:620px;
  display:block;
  object-fit:cover;
}

.related-grid,
.related-products-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}

.related-products-message{
  grid-column:1 / -1;
  padding:22px;
  color:#64748b;
  text-align:center;
  background:#fff;
  border:1px solid rgba(191,219,254,.74);
  border-radius:18px;
}

.related-card{
  display:block;
  overflow:hidden;
  border:1px solid rgba(191,219,254,.74);
  border-radius:20px;
  color:#0f172a;
  background:rgba(255,255,255,.82);
  box-shadow:0 18px 42px rgba(15,23,42,.08);
  text-decoration:none;
  transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

.related-card:hover{
  transform:translateY(-6px);
  border-color:rgba(56,189,248,.55);
  box-shadow:0 24px 58px rgba(37,99,235,.14);
}

.related-card img{
  width:100%;
  height:170px;
  display:block;
  object-fit:cover;
  transition:transform .35s ease;
}

.related-card:hover img{
  transform:scale(1.045);
}

.related-card h3{
  padding:18px 18px 8px;
  font-size:18px;
}

.related-card p{
  padding:0 18px 20px;
  color:#64748b;
  font-size:14px;
  line-height:1.6;
}

@media(max-width:1100px){
  .detail-page{
    padding-left:28px;
    padding-right:28px;
  }

  .related-grid,
  .related-products-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media(max-width:700px){
  .detail-page{
    padding:118px 18px 76px;
    gap:42px;
  }

  .detail-main-image img{
    height:360px;
  }

  .detail-features,
  .detail-info,
  .related-grid,
  .related-products-grid{
    grid-template-columns:1fr;
  }

  .detail-right h1{
    font-size:34px;
  }

  .related-products{
    padding:0 18px 78px;
  }

  .product-video-section{
    padding:0 18px 72px;
  }
}

/* HOME PRODUCT CATEGORY PREMIUM ENHANCEMENTS */

#products.section{
  padding:74px 5% 82px;
  background:
    radial-gradient(circle at 12% 18%,rgba(56,189,248,.12),transparent 28%),
    radial-gradient(circle at 88% 10%,rgba(37,99,235,.1),transparent 24%),
    linear-gradient(180deg,#f7fbff 0%,#eef6ff 100%);
}

#products .section-top{
  margin-bottom:34px;
}

#products .category-grid{
  gap:18px;
}

#products .category-card{
  display:flex;
  flex-direction:column;
  height:310px;
  border:1px solid rgba(203,213,225,.56);
  border-radius:18px;
  background:rgba(255,255,255,.78);
  box-shadow:
    0 14px 34px rgba(15,23,42,.065),
    inset 0 1px 0 rgba(255,255,255,.65);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  overflow:hidden;
  transition:transform .32s ease, box-shadow .32s ease, border-color .32s ease;
}

#products .category-card:hover{
  transform:translateY(-7px);
  border-color:rgba(56,189,248,.42);
  box-shadow:
    0 20px 48px rgba(37,99,235,.13),
    0 0 24px rgba(56,189,248,.1);
}

#products .category-card img{
  width:100%;
  height:240px;
  flex:0 0 240px;
  border-radius:18px 18px 14px 14px;
  object-fit:cover;
  display:block;
  background:#eaf3fb;
  opacity:0;
  animation:categoryImageIn .55s ease forwards;
}

#products .category-card:hover img{
  transform:scale(1.045);
}

@keyframes categoryImageIn{
  from{
    opacity:0;
    filter:blur(8px);
    transform:scale(1.015);
  }
  to{
    opacity:1;
    filter:blur(0);
    transform:scale(1);
  }
}

#products .category-info{
  flex:1 1 auto;
  min-height:70px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:flex-start;
  padding:9px 14px 11px;
}

#products .category-info h3{
  margin-bottom:8px;
  font-size:17px;
  font-weight:820;
  letter-spacing:0;
}

#products .category-info p{
  display:none;
}

#products .product-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:28px;
  margin-top:0;
  padding:0 13px;
  border-radius:999px;
  color:#fff;
  background:linear-gradient(135deg,#38bdf8,#2563eb);
  box-shadow:0 8px 18px rgba(37,99,235,.18);
  font-size:11px;
  font-weight:800;
  transition:transform .26s ease, box-shadow .26s ease, filter .26s ease;
}

#products .product-link:hover{
  transform:translateY(-2px);
  filter:saturate(1.08);
  box-shadow:0 18px 40px rgba(56,189,248,.34);
}

@media(max-width:1100px){
  #products .category-card{
    height:292px;
  }

  #products .category-card img{
    height:224px;
    flex-basis:224px;
  }
}

@media(max-width:700px){
  #products.section{
    padding:62px 5% 68px;
  }

  #products .category-grid{
    gap:18px;
  }

  #products .category-card{
    height:312px;
  }

  #products .category-card img{
    height:240px;
    flex-basis:240px;
  }

  #products .category-info{
    padding:10px 14px 12px;
  }
}

.whatsapp-container{
  right:max(18px,env(safe-area-inset-right));
  bottom:max(18px,env(safe-area-inset-bottom));
}

.whatsapp{
  min-width:58px;
  min-height:58px;
  box-shadow:0 16px 36px rgba(37,211,102,0.3);
}

.whatsapp img{
  display:block;
}

.form-status{
  margin-top:12px;
  color:#64748b;
  font-size:14px;
  line-height:1.5;
}

.form-status.success{
  color:#128c4a;
}

.form-status.error{
  color:#dc2626;
}

button.is-loading,
.btn.is-loading{
  position:relative;
  pointer-events:none;
  opacity:.86;
}

button.is-loading::after,
.btn.is-loading::after{
  content:"";
  width:16px;
  height:16px;
  margin-left:10px;
  border:2px solid rgba(255,255,255,.55);
  border-top-color:#fff;
  border-radius:50%;
  animation:xiqiSpin .75s linear infinite;
}

@keyframes xiqiSpin{
  to{
    transform:rotate(360deg);
  }
}

.detail-right,
.detail-desc,
.feature-item,
.info-row{
  min-width:0;
  overflow-wrap:anywhere;
}

.detail-main-image img,
.detail-gallery img,
.product-card img,
.category-card img{
  max-width:100%;
}

@media(max-width:700px){

  input,
  textarea,
  button,
  .btn,
  .product-info a,
  .whatsapp{
    min-height:48px;
  }

  input,
  textarea{
    font-size:16px;
  }

  .product-card,
  .category-card{
    margin-bottom:4px;
  }

  .detail-page{
    gap:34px;
    overflow:hidden;
  }

  .detail-buttons .btn{
    width:100%;
  }

  .whatsapp{
    width:58px;
    height:58px;
  }

  .whatsapp img{
    width:30px;
    height:30px;
  }
}