/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Inter','Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  background:#060708;
  color:#d4d4d4;
  line-height:1.6;
  overflow-x:hidden;
  /* Subtle carbon-fiber / industrial texture */
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.003) 2px, rgba(255,255,255,0.003) 4px),
    repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255,255,255,0.003) 2px, rgba(255,255,255,0.003) 4px),
    radial-gradient(ellipse at 50% 0%, rgba(244,121,32,0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 30%, rgba(33,150,243,0.03) 0%, transparent 50%);
}
body::before{
  content:'';
  position:fixed;
  inset:0;
  background:
    radial-gradient(circle at 20% 80%, rgba(244,121,32,0.03) 0%, transparent 50%),
    radial-gradient(circle at 70% 20%, rgba(33,150,243,0.02) 0%, transparent 50%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

/* ===== COLORS ===== */
:root{
  --bg-dark:#0d0d0d;
  --bg-card:#18181b;
  --bg-card-hover:#1f1f23;
  --border:#2a2a2e;
  --text-primary:#e8e8e8;
  --text-secondary:#a1a1a6;
  --text-muted:#6b6b70;
  --accent-orange:#f47920;
  --accent-orange-dark:#d45e10;
  --accent-blue:#2196f3;
  --accent-blue-dark:#1976d2;
  --silver:#c0c0c0;
  --success:#22c55e;
}

/* ===== TYPOGRAPHY ===== */
h1{font-size:clamp(2.2rem,5vw,3.8rem);font-weight:800;line-height:1.15;letter-spacing:-0.02em}
h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:700;letter-spacing:-0.01em}
h3{font-size:1.25rem;font-weight:600}
.section-label{display:inline-block;font-size:0.8rem;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;color:var(--accent-orange);margin-bottom:12px}
.gradient-text{background:linear-gradient(135deg,#e8e8e8 0%,#a1a1a6 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ===== LANGUAGE SWITCHER ===== */
.lang-switch{position:relative;margin-left:20px}
.lang-current{display:flex;align-items:center;gap:6px;padding:6px 12px;background:rgba(255,255,255,0.04);border:1px solid var(--border);border-radius:6px;cursor:pointer;font-size:0.8rem;color:var(--text-primary);transition:all 0.2s}
.lang-current:hover{border-color:var(--accent-orange)}
.lang-dropdown{position:absolute;top:100%;right:0;margin-top:6px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;overflow:hidden;opacity:0;pointer-events:none;transform:translateY(-8px);transition:all 0.2s;z-index:100}
.lang-dropdown.open{opacity:1;pointer-events:all;transform:translateY(0)}
.lang-dropdown a{display:block;padding:10px 20px;font-size:0.82rem;color:var(--text-secondary);transition:all 0.15s;white-space:nowrap}
.lang-dropdown a:hover,.lang-dropdown a.active{color:var(--accent-orange);background:rgba(244,121,32,0.06)}

/* ===== NAVIGATION ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(13,13,13,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:all 0.3s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1280px;margin:0 auto;padding:0 24px}
.nav-logo{display:flex;align-items:center}
.nav-logo img{height:56px;width:auto}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{font-size:0.85rem;font-weight:500;color:var(--text-secondary);transition:color 0.2s;letter-spacing:0.01em}
.nav-links a:hover,.nav-links a.nav-active{color:var(--text-primary)}
.nav-cta{padding:8px 20px;background:var(--accent-orange);color:#fff;border-radius:6px;font-size:0.85rem;font-weight:600;transition:background 0.2s}
.nav-cta:hover{background:var(--accent-orange-dark)}
.nav-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer}
.nav-right{display:flex;align-items:center;gap:16px}

/* ===== HERO ===== */
.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  position:relative;
  padding:120px 0 80px;
  overflow:hidden;
  /* Heater product image background with dark overlay */
  background:
    linear-gradient(180deg, rgba(6,7,8,0.55) 0%, rgba(6,7,8,0.75) 40%, rgba(6,7,8,0.92) 70%, #060708 100%),
    linear-gradient(90deg, rgba(6,7,8,0.85) 0%, rgba(6,7,8,0.4) 50%, rgba(6,7,8,0.55) 100%),
    url('../images/products/showcase/nano-fir.jpg') center 30% / cover no-repeat;
}
.hero::before{
  content:'';
  position:absolute;
  top:-30%;
  right:-10%;
  width:700px;
  height:700px;
  background:radial-gradient(circle, rgba(244,121,32,0.12) 0%, rgba(244,121,32,0.04) 40%, transparent 70%);
  pointer-events:none;
  animation:heroGlow 6s ease-in-out infinite alternate;
}
@keyframes heroGlow{
  from{opacity:0.6;transform:scale(1)}
  to{opacity:1;transform:scale(1.1)}
}
.hero::after{
  content:'';
  position:absolute;
  bottom:-20%;
  left:-5%;
  width:500px;
  height:500px;
  background:radial-gradient(circle, rgba(33,150,243,0.08) 0%, transparent 70%);
  pointer-events:none;
}
.hero-content{position:relative;z-index:1;max-width:800px}
.hero h1{margin-bottom:24px;color:#fff}
.hero p{font-size:1.15rem;color:var(--text-secondary);margin-bottom:40px;max-width:600px;line-height:1.7}
.hero-cta-group{display:flex;gap:16px;flex-wrap:wrap}
.btn{padding:14px 32px;border-radius:8px;font-size:0.95rem;font-weight:600;cursor:pointer;transition:all 0.2s;border:none;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:var(--accent-orange);color:#fff}
.btn-primary:hover{background:var(--accent-orange-dark);transform:translateY(-1px);box-shadow:0 8px 30px rgba(244,121,32,0.25)}
.btn-outline{border:1px solid var(--border);color:var(--text-primary);background:transparent}
.btn-outline:hover{border-color:var(--text-secondary);background:rgba(255,255,255,0.03)}
.hero-visual{
  position:absolute;
  right:-40px;
  top:50%;
  transform:translateY(-50%);
  width:520px;
  height:520px;
  border-radius:50%;
  overflow:hidden;
  border:1px solid rgba(244,121,32,0.25);
  opacity:0.45;
  pointer-events:none;
  box-shadow:0 0 120px rgba(244,121,32,0.2), inset 0 0 80px rgba(0,0,0,0.5);
}
.hero-visual img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:brightness(0.7) saturate(1.3);
}
.hero-visual::after{
  content:'';
  position:absolute;
  inset:0;
  background:radial-gradient(circle at 40% 60%, transparent 40%, rgba(6,7,8,0.7) 100%);
}

/* ===== SECTION COMMON ===== */
.section{padding:100px 0;position:relative;z-index:1}
.section{
  background-image:
    linear-gradient(180deg, rgba(6,7,8,0) 0%, rgba(244,121,32,0.012) 40%, rgba(33,150,243,0.008) 60%, rgba(6,7,8,0) 100%);
}
/* Diagonal stripe texture for even sections */
#factory.section, #articles.section{
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 4px, rgba(255,255,255,0.006) 4px, rgba(255,255,255,0.006) 8px),
    linear-gradient(180deg, rgba(6,7,8,0) 0%, rgba(33,150,243,0.012) 50%, rgba(6,7,8,0) 100%);
}
.section-header{text-align:center;margin-bottom:64px;position:relative}
.section-header::after{
  content:'';
  display:block;
  width:60px;
  height:3px;
  background:linear-gradient(90deg, transparent, var(--accent-orange), transparent);
  margin:20px auto 0;
  border-radius:2px;
}
.section-header h2{color:#fff;margin-bottom:12px}
.section-header p{color:var(--text-secondary);max-width:560px;margin:0 auto}

/* ===== PRODUCTS ===== */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:all 0.3s;display:flex;flex-direction:column}
.product-card:hover{border-color:#3a3a3e;transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,0.4)}
.product-img{height:260px;background:var(--bg-card-hover);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.product-img img{width:100%;height:100%;object-fit:cover}
.product-img .img-placeholder{color:var(--text-muted);font-size:0.85rem;text-align:center;padding:20px}
.product-body{padding:24px;flex:1;display:flex;flex-direction:column}
.product-body h3{color:#fff;margin-bottom:8px}
.product-body .product-subtitle{color:var(--accent-orange);font-size:0.8rem;font-weight:500;letter-spacing:0.05em;text-transform:uppercase;margin-bottom:12px}
.product-body .product-desc{color:var(--text-secondary);font-size:0.9rem;margin-bottom:16px;line-height:1.6;flex:1}
.product-specs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.product-specs .spec-tag{font-size:0.72rem;padding:4px 10px;background:rgba(255,255,255,0.04);border:1px solid var(--border);border-radius:20px;color:var(--text-secondary)}
.product-actions{display:flex;gap:10px}
.product-actions .btn{flex:1;text-align:center;justify-content:center;font-size:0.85rem;padding:10px 16px}
.product-price{font-size:1.1rem;font-weight:700;color:var(--accent-orange);margin-bottom:12px}
.product-price span{font-size:0.72rem;font-weight:400;color:var(--text-muted)}
.product-moq{font-size:0.75rem;color:var(--text-muted);margin-bottom:8px;display:flex;align-items:center;gap:4px}

/* ===== APPLICATIONS ===== */
.applications-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.app-card{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:32px 24px;text-align:center;transition:all 0.3s;cursor:default}
.app-card:hover{border-color:#3a3a3e;background:var(--bg-card-hover)}
.app-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.6rem}
.app-icon.orange{background:rgba(244,121,32,0.12)}
.app-icon.blue{background:rgba(33,150,243,0.12)}
.app-icon.green{background:rgba(34,197,94,0.12)}
.app-icon.purple{background:rgba(168,85,247,0.12)}
.app-icon.amber{background:rgba(245,158,11,0.12)}
.app-card h4{color:#fff;font-size:0.95rem;margin-bottom:8px}
.app-card p{color:var(--text-secondary);font-size:0.8rem;line-height:1.5}

/* ===== FACTORY ===== */
.factory-hero{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--bg-card);border:1px solid var(--border);margin-bottom:40px}
.factory-hero img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s}
.factory-hero:hover img{transform:scale(1.03)}
.factory-info{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:48px}
.factory-desc-wrap p{color:var(--text-secondary);line-height:1.8;margin-bottom:0}
.factory-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:20px;text-align:center;transition:all 0.3s}
.stat-card:hover{border-color:var(--accent-orange);transform:translateY(-2px)}
.stat-number{font-size:1.8rem;font-weight:800;color:var(--accent-orange);line-height:1}
.stat-label{font-size:0.75rem;color:var(--text-secondary);margin-top:6px}
.cert-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.cert-badge{padding:6px 14px;background:rgba(255,255,255,0.03);border:1px solid var(--border);border-radius:6px;font-size:0.72rem;font-weight:600;color:var(--text-primary);letter-spacing:0.05em}

/* Factory Gallery */
.factory-gallery-title{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:24px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.factory-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.factory-gallery-item{position:relative;border-radius:10px;overflow:hidden;aspect-ratio:4/3;background:var(--bg-card);border:1px solid var(--border);cursor:pointer;transition:all 0.3s}
.factory-gallery-item:hover{border-color:var(--accent-orange);transform:translateY(-3px);box-shadow:0 8px 30px rgba(244,121,32,0.15)}
.factory-gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s}
.factory-gallery-item:hover img{transform:scale(1.08)}
.gallery-caption{position:absolute;bottom:0;left:0;right:0;padding:10px 12px;background:linear-gradient(transparent,rgba(0,0,0,0.85));color:#fff;font-size:0.78rem;font-weight:600;letter-spacing:0.02em;pointer-events:none}

/* ===== SPECS TABLE ===== */
.specs-tabs{display:flex;gap:0;margin-bottom:32px;border-bottom:1px solid var(--border)}
.specs-tab{padding:12px 24px;font-size:0.9rem;font-weight:500;color:var(--text-secondary);cursor:pointer;border-bottom:2px solid transparent;transition:all 0.2s;background:none;border-top:none;border-left:none;border-right:none}
.specs-tab.active{color:var(--accent-orange);border-bottom-color:var(--accent-orange)}
.specs-tab:hover{color:var(--text-primary)}
.specs-panel{display:none}
.specs-panel.active{display:block}
.specs-table{width:100%;border-collapse:collapse}
.specs-table th,.specs-table td{padding:14px 20px;text-align:left;border-bottom:1px solid var(--border)}
.specs-table th{font-size:0.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.08em;background:rgba(255,255,255,0.02);width:35%}
.specs-table td{font-size:0.9rem;color:var(--text-primary)}

/* ===== FEATURES GRID (about page) ===== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:28px;text-align:center;transition:all 0.3s}
.feature-card:hover{border-color:#3a3a3e}
.feature-icon{font-size:2rem;margin-bottom:12px}
.feature-card h4{color:#fff;font-size:0.95rem;margin-bottom:8px}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;margin-bottom:12px;overflow:hidden}
.faq-question{padding:20px 24px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:600;color:#fff;font-size:0.95rem;transition:background 0.2s}
.faq-question:hover{background:rgba(255,255,255,0.02)}
.faq-question .faq-arrow{font-size:0.7rem;transition:transform 0.3s;color:var(--text-muted)}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--accent-orange)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all 0.3s}
.faq-item.open .faq-answer{padding:0 24px 20px;max-height:500px}
.faq-answer p{color:var(--text-secondary);font-size:0.9rem;line-height:1.7}

/* ===== ABOUT PAGE ===== */
.about-hero{
  min-height:50vh;
  display:flex;
  align-items:center;
  padding:140px 0 60px;
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(180deg, rgba(6,7,8,0.5) 0%, rgba(6,7,8,0.85) 60%, #060708 100%),
    linear-gradient(90deg, rgba(6,7,8,0.8) 0%, rgba(6,7,8,0.3) 60%, rgba(6,7,8,0.5) 100%),
    url('../images/factory-clean/工厂大门航拍.jpg') center 40% / cover no-repeat;
}
.about-hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:radial-gradient(ellipse at 70% 60%, rgba(244,121,32,0.08) 0%, transparent 60%);
  pointer-events:none;
}
.timeline{position:relative;padding-left:32px}
.timeline::before{content:'';position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--border)}
.timeline-item{position:relative;margin-bottom:32px;padding-left:24px}
.timeline-item::before{content:'';position:absolute;left:-36px;top:6px;width:10px;height:10px;border-radius:50%;background:var(--accent-orange)}
.timeline-item h4{color:#fff;margin-bottom:4px}

/* ===== REVIEWS ===== */
.reviews-slider{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:28px}
.review-stars{color:#f59e0b;font-size:0.9rem;margin-bottom:12px;letter-spacing:2px}
.review-text{color:var(--text-secondary);font-size:0.9rem;line-height:1.7;margin-bottom:16px;font-style:italic}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:var(--border);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:0.85rem;color:var(--accent-orange)}
.review-info h5{color:#fff;font-size:0.85rem}
.review-info span{color:var(--text-muted);font-size:0.75rem}

/* ===== ARTICLES ===== */
.articles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-card{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:all 0.3s}
.article-card:hover{border-color:#3a3a3e}
.article-img{height:180px;background:var(--bg-card-hover);position:relative;overflow:hidden}
.article-img img{display:block;width:100%;height:100%;object-fit:cover;transition:transform 0.3s}
.article-card:hover .article-img img{transform:scale(1.05)}
.article-tag{position:absolute;top:12px;left:12px;padding:4px 10px;background:var(--accent-orange);color:#fff;font-size:0.7rem;font-weight:600;border-radius:4px}
.article-body{padding:20px}
.article-body h4{color:#fff;font-size:1rem;margin-bottom:8px;line-height:1.4}
.article-body p{color:var(--text-secondary);font-size:0.83rem;line-height:1.6;margin-bottom:12px}
.article-meta{font-size:0.72rem;color:var(--text-muted)}

/* ===== COUNTRY CARDS ===== */
.country-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.country-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:32px;transition:all 0.3s;text-align:center}
.country-card:hover{border-color:#3a3a3e;transform:translateY(-2px)}
.country-flag{font-size:3rem;margin-bottom:12px}
.country-card h3{color:#fff;margin-bottom:8px}
.country-card .country-highlight{display:inline-block;padding:4px 12px;background:rgba(244,121,32,0.12);color:var(--accent-orange);border-radius:20px;font-size:0.75rem;font-weight:600;margin-top:12px}

/* ===== CART / INQUIRY FORM ===== */
.inquiry-section{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;overflow:hidden}
.inquiry-layout{display:grid;grid-template-columns:1.2fr 1fr}
.inquiry-form{padding:48px}
.inquiry-form h2{color:#fff;margin-bottom:8px}
.inquiry-form > p{color:var(--text-secondary);margin-bottom:32px;font-size:0.9rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:0.78rem;font-weight:600;color:var(--text-secondary);letter-spacing:0.03em}
.form-group input,.form-group select,.form-group textarea{padding:12px 16px;background:rgba(255,255,255,0.03);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:0.9rem;font-family:inherit;transition:border-color 0.2s;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--accent-orange)}
.form-group textarea{resize:vertical;min-height:80px}
.form-group select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a1a1a6' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}

/* ===== CART PANEL ===== */
.cart-panel{background:rgba(0,0,0,0.25);border-left:1px solid var(--border);padding:48px 36px;display:flex;flex-direction:column}
.cart-panel h3{color:#fff;font-size:1.1rem;margin-bottom:20px;display:flex;align-items:center;gap:8px}
.cart-count{font-size:0.75rem;background:var(--accent-orange);color:#fff;width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.cart-items{flex:1;overflow-y:auto;max-height:350px}
.cart-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border)}
.cart-item:last-child{border-bottom:none}
.cart-item-img{width:52px;height:52px;border-radius:8px;background:var(--border);flex-shrink:0;overflow:hidden}
.cart-item-img img{width:100%;height:100%;object-fit:cover}
.cart-item-info{flex:1;min-width:0}
.cart-item-info h5{color:#fff;font-size:0.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cart-item-info span{color:var(--text-muted);font-size:0.75rem}
.cart-item-qty{display:flex;align-items:center;gap:6px}
.cart-item-qty button{width:26px;height:26px;border-radius:50%;border:1px solid var(--border);background:transparent;color:var(--text-primary);cursor:pointer;font-size:0.8rem;display:flex;align-items:center;justify-content:center;transition:all 0.2s}
.cart-item-qty button:hover{border-color:var(--accent-orange);color:var(--accent-orange)}
.cart-item-qty span{font-size:0.85rem;color:var(--text-primary);width:20px;text-align:center}
.cart-item-remove{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:1.1rem;padding:4px;transition:color 0.2s}
.cart-item-remove:hover{color:#ef4444}
.cart-empty{text-align:center;color:var(--text-muted);padding:40px 0;font-size:0.9rem}
.cart-summary{margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}
.cart-summary-row{display:flex;justify-content:space-between;font-size:0.85rem;color:var(--text-secondary);margin-bottom:8px}
.cart-total{font-size:1.1rem;font-weight:700;color:#fff}

/* ===== WHATSAPP WIDGET ===== */
.whatsapp-widget{position:fixed;bottom:24px;right:24px;z-index:1500;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.whatsapp-btn{width:56px;height:56px;border-radius:50%;background:#25D366;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.6rem;cursor:pointer;box-shadow:0 4px 20px rgba(37,211,102,0.35);transition:all 0.3s;border:none;text-decoration:none;position:relative}
.whatsapp-btn:hover{transform:scale(1.08);box-shadow:0 6px 28px rgba(37,211,102,0.5)}
.whatsapp-btn .pulse{position:absolute;inset:-4px;border-radius:50%;border:2px solid #25D366;animation:whatsapp-pulse 2s infinite}
@keyframes whatsapp-pulse{0%{transform:scale(1);opacity:0.8}100%{transform:scale(1.6);opacity:0}}
.whatsapp-tooltip{position:absolute;right:68px;background:#fff;color:#111;padding:10px 16px;border-radius:8px;font-size:0.8rem;font-weight:600;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity 0.3s;box-shadow:0 4px 16px rgba(0,0,0,0.15)}
.whatsapp-tooltip::after{content:'';position:absolute;right:-6px;top:50%;transform:translateY(-50%);border:6px solid transparent;border-left-color:#fff}
.whatsapp-btn:hover .whatsapp-tooltip{opacity:1}

/* ===== MODAL ===== */
.modal-overlay{position:fixed;inset:0;z-index:2000;background:rgba(0,0,0,0.8);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity 0.3s}
.modal-overlay.active{opacity:1;pointer-events:all}
.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:40px;max-width:600px;width:90%;max-height:85vh;overflow-y:auto;position:relative}
.modal-close{position:absolute;top:16px;right:16px;background:none;border:none;color:var(--text-muted);font-size:1.5rem;cursor:pointer}
.modal h3{color:#fff;margin-bottom:16px;font-size:1.3rem}
.modal img{width:100%;border-radius:8px;margin-bottom:20px}
.modal-specs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.modal-spec-item{background:rgba(255,255,255,0.02);padding:12px;border-radius:8px;border:1px solid var(--border)}
.modal-spec-item .spec-key{font-size:0.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.05em;margin-bottom:4px}
.modal-spec-item .spec-val{font-size:0.9rem;color:var(--text-primary);font-weight:500}
.modal-img-tabs{display:flex;gap:8px;margin-bottom:12px}
.modal-img-tab{padding:6px 14px;font-size:0.75rem;border-radius:20px;border:1px solid var(--border);background:transparent;color:var(--text-muted);cursor:pointer;transition:all 0.2s}
.modal-img-tab.active{background:var(--accent-orange);color:#fff;border-color:var(--accent-orange)}
.modal-img-panel{display:none}
.modal-img-panel.active{display:block}

/* ===== FOOTER ===== */
.footer{background:var(--bg-card);border-top:1px solid var(--border);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;margin-bottom:40px}
.footer-col{min-width:0}
.footer h4{color:#fff;font-size:0.85rem;margin-bottom:16px;letter-spacing:0.04em}
.footer p,.footer a{color:var(--text-muted);font-size:0.85rem;line-height:1.8}
.footer a:hover{color:var(--text-primary)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;color:var(--text-muted);font-size:0.75rem;flex-wrap:wrap;gap:12px}

/* ===== TOAST ===== */
.toast{position:fixed;bottom:24px;right:24px;z-index:3000;padding:14px 24px;border-radius:8px;font-size:0.85rem;font-weight:500;transform:translateY(100px);opacity:0;transition:all 0.3s;pointer-events:none}
.toast.show{transform:translateY(0);opacity:1}
.toast.success{background:#166534;color:#86efac;border:1px solid #22c55e}
.toast.error{background:#991b1b;color:#fca5a5;border:1px solid #ef4444}

/* ===== BREADCRUMB ===== */
.breadcrumb{padding:100px 0 20px;font-size:0.82rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb a:hover{color:var(--accent-orange)}

/* ===== PRIVACY PAGE ===== */
.privacy-content h2{color:#fff;font-size:1.1rem;margin-top:40px;margin-bottom:12px;padding-top:16px;border-top:1px solid var(--border)}
.privacy-content h2:first-child{border-top:none;margin-top:0}
.privacy-content p{color:var(--text-secondary);font-size:0.9rem;line-height:1.8;margin-bottom:12px}
.privacy-content ul{margin-bottom:16px;padding-left:24px}
.privacy-content li{color:var(--text-secondary);font-size:0.9rem;line-height:1.8;margin-bottom:6px}

/* ===== DOWNLOADS PAGE ===== */
.downloads-hero{padding:140px 0 40px;text-align:center}
.downloads-hero h1{font-size:2.2rem;margin-bottom:12px}
.downloads-hero p{color:var(--text-secondary);max-width:700px;margin:0 auto;font-size:1.05rem;line-height:1.7}
.downloads-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(500px,1fr));gap:20px;margin-top:40px}
.download-card{display:grid;grid-template-columns:160px 1fr;gap:20px;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:20px;transition:all 0.2s;cursor:pointer}
.download-card:hover{border-color:var(--accent-orange);background:var(--bg-card-hover);transform:translateY(-2px)}
.dl-card-img{width:160px;height:160px;border-radius:8px;overflow:hidden;background:#111;flex-shrink:0}
.dl-card-img img{width:100%;height:100%;object-fit:cover}
.dl-card-body{display:flex;flex-direction:column;justify-content:center}
.dl-card-sku{color:var(--accent-orange);font-weight:700;font-size:0.78rem;letter-spacing:0.05em;margin-bottom:4px}
.dl-card-body h3{font-size:1.1rem;color:#fff;margin-bottom:6px}
.dl-card-body p{color:var(--text-secondary);font-size:0.88rem;line-height:1.5;margin-bottom:10px}
.dl-card-meta{display:flex;gap:8px;color:var(--text-muted);font-size:0.82rem;margin-bottom:10px}
.dl-card-btn{color:var(--accent-orange);font-weight:600;font-size:0.9rem}
.download-card:hover .dl-card-btn{color:#fff}

/* ===== SPEC SHEET PAGE ===== */
.spec-tag{display:inline-block;background:rgba(244,121,32,0.12);color:var(--accent-orange);padding:4px 12px;border-radius:20px;font-size:0.78rem;font-weight:600;border:1px solid rgba(244,121,32,0.2)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .products-grid{grid-template-columns:repeat(2,1fr)}
  .applications-grid{grid-template-columns:repeat(3,1fr)}
  .inquiry-layout{grid-template-columns:1fr}
  .cart-panel{border-left:none;border-top:1px solid var(--border)}
  .factory-info{grid-template-columns:1fr;gap:32px}
  .factory-gallery{grid-template-columns:repeat(3,1fr)}
  .articles-grid,.country-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:var(--bg-dark);border-bottom:1px solid var(--border);padding:24px;gap:20px}
  .nav-toggle{display:block}
  .lang-switch{margin-left:0}
  .products-grid{grid-template-columns:1fr}
  .applications-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-slider{grid-template-columns:1fr}
  .articles-grid,.country-grid,.features-grid{grid-template-columns:1fr}
  .hero-visual{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .whatsapp-widget{bottom:16px;right:16px}
  .factory-gallery{grid-template-columns:repeat(2,1fr)}
  .factory-hero{aspect-ratio:4/3}
}
@media(max-width:480px){
  .applications-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-cta-group{flex-direction:column}
  .factory-gallery{grid-template-columns:1fr}
}