/* ===== Aochuang Sign v2 — Modern Design System ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0b0f15;
  --bg-alt: #11161e;
  --bg-card: #161c27;
  --border: #1e2733;
  --border-light: #283240;
  --text: #e8ecf1;
  --text-dim: #8492a6;
  --text-muted: #5a6678;
  --gold: #d4a843;
  --gold-bright: #e8c252;
  --gold-glow: rgba(212,168,67,0.25);
  --gold-glow-strong: rgba(212,168,67,0.45);
  --accent: #4a90d9;
  --white: #ffffff;
  --max-width: 1240px;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-gold: 0 0 24px var(--gold-glow);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased;
  font-size: 16px;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 28px; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 15px 36px; font-size: 14px; font-weight: 600; border-radius: var(--radius); cursor: pointer; transition: all var(--transition); border: none; letter-spacing: 0.4px; text-transform: uppercase; gap: 8px; }
.btn-primary { background: linear-gradient(135deg, var(--gold) 0%, #c49635 100%); color: #0a0c12; box-shadow: 0 2px 12px var(--gold-glow); }
.btn-primary:hover { background: linear-gradient(135deg, var(--gold-bright) 0%, var(--gold) 100%); box-shadow: var(--shadow-gold); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1.5px solid var(--border-light); color: var(--text); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); box-shadow: 0 0 16px var(--gold-glow); }
.btn-lg { padding: 18px 44px; font-size: 15px; }

/* ===== Header ===== */
.header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(11,15,21,0.85); backdrop-filter: blur(20px) saturate(180%); border-bottom: 1px solid rgba(255,255,255,0.06); transition: all var(--transition); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { font-size: 21px; font-weight: 800; color: var(--white); letter-spacing: 0.5px; }
.logo span { color: var(--gold); font-weight: 700; }
.nav-links { display: flex; gap: 36px; }
.nav-links a { color: var(--text-dim); font-size: 14px; transition: color var(--transition); font-weight: 500; position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--gold); transition: width var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 1px; transition: all var(--transition); }

/* ===== Hero — Full redesign ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; position: relative; padding: 100px 0 80px;
  background: linear-gradient(135deg, #0a0e14 0%, #0f141d 40%, #121a26 100%);
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: 0; right: 0; width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(212,168,67,0.03) 100%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; max-width: 680px; }
.hero .section-tag { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 3px; color: var(--gold); margin-bottom: 20px; }
.hero h1 { font-size: 62px; font-weight: 800; color: var(--white); line-height: 1.1; margin-bottom: 22px; letter-spacing: -1px; }
.hero h1 span { color: var(--gold); display: inline-block; position: relative; }
.hero h1 span::after { content: ''; position: absolute; bottom: 4px; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--gold-glow-strong), transparent); border-radius: 2px; }
.hero p { font-size: 18px; color: var(--text-dim); line-height: 1.8; margin-bottom: 40px; max-width: 520px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== Section Headers ===== */
.section-intro { margin-bottom: 56px; }
.section-intro .section-tag { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 2.5px; color: var(--gold); margin-bottom: 14px; }
.section-intro h2 { font-size: 40px; font-weight: 800; color: var(--white); line-height: 1.2; margin-bottom: 14px; letter-spacing: -0.5px; }
.section-intro p { color: var(--text-dim); font-size: 16px; max-width: 560px; line-height: 1.7; }

/* ===== Who We Are ===== */
.about-section { padding: 110px 0; background: var(--bg); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-images { display: flex; flex-direction: column; gap: 14px; }
.about-images .img-main { width: 100%; height: 300px; object-fit: cover; border-radius: var(--radius-lg); }
.about-images-bottom { display: flex; gap: 14px; }
.about-images-bottom img { width: 50%; height: 190px; object-fit: cover; border-radius: var(--radius-lg); }
.about-text h2 { font-size: 34px; color: var(--white); margin-bottom: 22px; font-weight: 800; letter-spacing: -0.5px; }
.about-text p { color: var(--text-dim); font-size: 15px; line-height: 1.9; margin-bottom: 26px; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 36px; }
.about-stat { padding: 20px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); }
.about-stat .num { font-size: 30px; font-weight: 800; color: var(--gold); }
.about-stat .lbl { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== Product Cards — Redesigned ===== */
.products-section { padding: 110px 0; background: var(--bg-alt); }
.product-card-link { display: block; }
.product-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 64px 0; border-top: 1px solid var(--border); }
.product-row:first-of-type { border-top: none; padding-top: 0; }
.product-row.reverse .product-img { order: 1; }
.product-row.reverse .product-info { order: 0; }
.product-img { position: relative; overflow: hidden; aspect-ratio: 4/3; border-radius: var(--radius-lg); }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.product-row:hover .product-img img { transform: scale(1.05); }
.product-img::after { content: ''; position: absolute; inset: 0; border-radius: var(--radius-lg); border: 1px solid rgba(255,255,255,0.06); pointer-events: none; }
.product-img::before { content: ''; position: absolute; inset: 0; border-radius: var(--radius-lg); background: linear-gradient(135deg, var(--gold-glow) 0%, transparent 50%); opacity: 0; transition: opacity var(--transition); z-index: 1; pointer-events: none; }
.product-row:hover .product-img::before { opacity: 1; }
.product-info h3 { font-size: 28px; color: var(--white); margin-bottom: 14px; font-weight: 700; letter-spacing: -0.3px; }
.product-info p { color: var(--text-dim); font-size: 15px; line-height: 1.8; margin-bottom: 22px; }
.spec-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.spec-tag { padding: 7px 16px; font-size: 12px; font-weight: 600; color: var(--gold); background: rgba(212,168,67,0.08); border: 1px solid rgba(212,168,67,0.2); border-radius: 20px; letter-spacing: 0.3px; transition: all var(--transition); }
.spec-tag:hover { background: rgba(212,168,67,0.15); border-color: var(--gold); }

/* Product Card Grid (for products.html) */
.product-card {
  display: block; background: var(--bg-card); border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border); transition: all var(--transition); cursor: pointer;
}
.product-card:hover { border-color: var(--gold); transform: translateY(-4px); box-shadow: var(--shadow-lg), 0 0 30px var(--gold-glow); }
.product-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover img { transform: scale(1.06); }
.product-card-body { padding: 22px; }
.product-card-body h3 { font-size: 17px; color: var(--white); margin-bottom: 6px; font-weight: 700; }
.product-card-body p { font-size: 13px; color: var(--text-dim); line-height: 1.6; margin-bottom: 12px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { padding: 4px 12px; font-size: 11px; font-weight: 600; color: var(--text-muted); background: rgba(255,255,255,0.04); border-radius: 12px; }

/* Products page grid */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 60px 0; }
@media (max-width: 960px) { .products-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .products-grid { grid-template-columns: 1fr; } }

/* ===== Numbers ===== */
.numbers-section { padding: 80px 0; background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.numbers-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.number-item { text-align: center; flex: 1; min-width: 150px; padding: 20px; }
.number-item .num { font-size: 52px; font-weight: 900; color: var(--gold); line-height: 1; margin-bottom: 10px; letter-spacing: -1px; }
.number-item .lbl { font-size: 13px; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; }

/* ===== Factory ===== */
.factory-section { padding: 110px 0; background: var(--bg); }
.factory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; max-width: 1100px; margin: 0 auto; }
.factory-item { position: relative; aspect-ratio: 1; overflow: hidden; cursor: pointer; border-radius: var(--radius); }
.factory-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.factory-item:hover img { transform: scale(1.1); }
.factory-item .label { position: absolute; bottom: 0; left: 0; right: 0; padding: 20px; background: linear-gradient(transparent, rgba(10,14,20,0.95)); color: var(--white); font-size: 14px; font-weight: 700; letter-spacing: 0.5px; opacity: 0; transform: translateY(10px); transition: all var(--transition); }
.factory-item:hover .label { opacity: 1; transform: translateY(0); }

/* ===== Certs ===== */
.cert-section { padding: 64px 0; background: var(--bg-alt); }
.cert-grid { display: flex; justify-content: center; gap: 52px; flex-wrap: wrap; align-items: center; }
.cert-item { text-align: center; }
.cert-item img { width: 52px; height: 52px; margin: 0 auto 10px; opacity: 0.7; transition: all var(--transition); filter: grayscale(30%); }
.cert-item:hover img { opacity: 1; filter: grayscale(0); }
.cert-item span { display: block; font-size: 12px; color: var(--text-muted); font-weight: 500; }
.cert-note { text-align: center; margin-top: 26px; font-size: 13px; color: var(--text-muted); }
.cert-note a { color: var(--gold); font-weight: 600; }

/* ===== Testimonials ===== */
.testimonials-section { padding: 110px 0; background: var(--bg); }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.testimonial-card { padding: 38px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: all var(--transition); }
.testimonial-card:hover { border-color: rgba(212,168,67,0.35); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.testimonial-card .quote { font-size: 14px; color: var(--text-dim); line-height: 1.9; margin-bottom: 26px; font-style: italic; position: relative; }
.testimonial-card .quote::before { content: '"'; font-size: 48px; color: var(--gold); opacity: 0.3; position: absolute; top: -16px; left: -8px; line-height: 1; font-style: normal; }
.testimonial-card .author { display: flex; align-items: center; gap: 14px; }
.author-avatar { width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 700; color: var(--bg); background: linear-gradient(135deg, var(--gold), var(--gold-bright)); flex-shrink: 0; }
.author-info strong { display: block; font-size: 14px; color: var(--white); }
.author-info span { font-size: 12px; color: var(--text-muted); }

/* ===== Timeline ===== */
.timeline-section { padding: 80px 0; background: var(--bg-alt); }
.timeline { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; margin-top: 36px; }
.timeline-step { background: var(--bg-card); border-radius: var(--radius); padding: 28px 18px; text-align: center; border: 1px solid var(--border); border-top: 3px solid var(--gold); transition: all var(--transition); }
.timeline-step:hover { border-color: var(--gold); box-shadow: 0 4px 20px var(--gold-glow); transform: translateY(-2px); }
.timeline-day { font-size: 11px; color: var(--gold); font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 10px; }
.timeline-title { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.timeline-desc { font-size: 12px; color: var(--text-muted); line-height: 1.5; }

/* ===== Product Detail ===== */
.prod-hero { padding: 140px 0 80px; background: var(--bg); }
.prod-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.prod-hero h1 { font-size: 40px; font-weight: 800; color: var(--white); margin-bottom: 16px; letter-spacing: -0.5px; }
.prod-hero .subtitle { font-size: 16px; color: var(--text-dim); line-height: 1.8; margin-bottom: 20px; }
.price-range { font-size: 24px; font-weight: 800; color: var(--gold-bright); margin-bottom: 6px; }
.price-note { font-size: 13px; color: var(--text-muted); margin-bottom: 28px; }
.prod-hero-img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius-lg); }
.specs-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
.spec-card { background: var(--bg-card); padding: 28px 20px; text-align: center; border: 1px solid var(--border); }
.spec-card:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.spec-card:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.spec-card .val { font-size: 22px; font-weight: 800; color: var(--gold); margin-bottom: 4px; }
.spec-card .lbl { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 40px; }
.detail-block h3 { font-size: 20px; color: var(--white); margin-bottom: 16px; font-weight: 700; }
.detail-block table { width: 100%; border-collapse: collapse; }
.detail-block td { padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.detail-block td:first-child { color: var(--text-muted); width: 120px; font-weight: 500; }
.detail-block td:last-child { color: var(--text); }

/* ===== Gallery ===== */
.prod-gallery { padding: 60px 0; background: var(--bg-alt); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery-item { overflow: hidden; border-radius: var(--radius); cursor: pointer; }
.gallery-item img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius); transition: transform 0.5s ease; }
.gallery-item:hover img { transform: scale(1.05); }

/* ===== CTA ===== */
.cta-section { padding: 110px 0; background: var(--bg-alt); }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.cta-text h2 { font-size: 34px; color: var(--white); margin-bottom: 18px; font-weight: 800; letter-spacing: -0.5px; }
.cta-text p { color: var(--text-dim); font-size: 15px; line-height: 1.8; }
.cta-form .form-group { margin-bottom: 18px; }
.cta-form label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 8px; font-weight: 600; }
.cta-form input, .cta-form textarea { width: 100%; padding: 15px 18px; background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius); color: var(--text); font-size: 15px; font-family: inherit; outline: none; transition: all var(--transition); }
.cta-form input:focus, .cta-form textarea:focus { border-color: var(--gold); box-shadow: 0 0 0 3px var(--gold-glow); }
.cta-form textarea { min-height: 110px; resize: vertical; }
.form-success { display: none; color: var(--gold); font-weight: 600; padding: 24px 0; font-size: 15px; }

/* ===== Footer ===== */
.footer { padding: 72px 0 36px; background: #080c12; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 56px; margin-bottom: 48px; }
.footer h3 { color: var(--white); font-size: 14px; margin-bottom: 18px; letter-spacing: 1px; text-transform: uppercase; }
.footer-about p { font-size: 14px; color: var(--text-muted); line-height: 1.8; }
.footer-links ul li { margin-bottom: 12px; }
.footer-links a { font-size: 14px; color: var(--text-muted); transition: all var(--transition); }
.footer-links a:hover { color: var(--gold); padding-left: 4px; }
.footer-contact p { font-size: 14px; color: var(--text-muted); margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 28px; text-align: center; font-size: 13px; color: var(--text-muted); }

/* ===== WhatsApp ===== */
.whatsapp-float { position: fixed; bottom: 30px; right: 30px; width: 56px; height: 56px; background: #25d366; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 24px rgba(37,211,102,0.4); z-index: 999; transition: all var(--transition); }
.whatsapp-float:hover { transform: scale(1.15); box-shadow: 0 6px 32px rgba(37,211,102,0.55); }
.whatsapp-float svg { width: 28px; height: 28px; fill: #fff; }

/* ===== Toast ===== */
.toast { position: fixed; top: 24px; left: 50%; transform: translateX(-50%); padding: 16px 32px; border-radius: var(--radius); color: #fff; font-size: 14px; font-weight: 600; z-index: 2000; animation: slideDown 0.3s ease; display: none; box-shadow: var(--shadow-lg); }
.toast.success { background: #1b5e20; }
.toast.error { background: #b71c1c; }
@keyframes slideDown { from { opacity: 0; transform: translateX(-50%) translateY(-12px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

/* ===== Page Header ===== */
.page-header { padding: 140px 0 64px; background: var(--bg); border-bottom: 1px solid var(--border); }
.page-header h1 { color: var(--white); font-size: 40px; font-weight: 800; margin-bottom: 10px; letter-spacing: -0.5px; }
.page-header p { color: var(--text-dim); font-size: 16px; }

/* ===== Blog Grid ===== */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.blog-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: all var(--transition); cursor: pointer; }
.blog-card:hover { border-color: var(--gold); transform: translateY(-4px); box-shadow: var(--shadow-lg), 0 0 24px var(--gold-glow); }
.blog-card-img { aspect-ratio: 16/10; overflow: hidden; }
.blog-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.blog-card:hover .blog-card-img img { transform: scale(1.05); }
.blog-card-body { padding: 26px; }
.blog-card-date { font-size: 11px; color: var(--text-muted); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; }
.blog-card h3 { font-size: 19px; color: var(--white); margin-bottom: 10px; line-height: 1.4; font-weight: 700; }
.blog-card p { font-size: 14px; color: var(--text-dim); line-height: 1.7; margin-bottom: 18px; }
.read-more { font-size: 13px; color: var(--gold); font-weight: 700; transition: color var(--transition); }
.read-more:hover { color: var(--gold-bright); }

/* ===== Trust Strip ===== */
.trust-strip { background: var(--bg-card); padding: 22px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.trust-items { display: flex; justify-content: center; gap: 44px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-dim); font-weight: 500; }
.trust-icon { font-size: 18px; }
.trust-item a { color: var(--gold); font-weight: 600; }
.trust-item a:hover { text-decoration: underline; }

/* ===== Old blog content ===== */
.page-header + section h2, .page-header + section h3, .page-header + section h4 { color: var(--white) !important; }
.page-header + section p, .page-header + section li { color: var(--text-dim) !important; }
.page-header + section a { color: var(--gold) !important; }
.page-header + section ol, .page-header + section ul { padding-left: 24px; margin: 18px 0; }
.page-header + section blockquote { border-left: 3px solid var(--gold); padding-left: 18px; color: var(--text-dim); margin: 18px 0; }
.page-header + section img { max-width: 100%; height: auto; border-radius: var(--radius); }
.page-header + section div[style*="gray"] { background: var(--bg-card) !important; border-radius: var(--radius); }
.page-header + section div[style*="gray"] h3 { color: var(--white) !important; }
.page-header + section div[style*="gray"] p { color: var(--text-dim) !important; }

/* ===== Compatibility ===== */
.custom-order-page, #factoryBoard, .dashboard-page { background: var(--bg); color: var(--text); }
.custom-order-page input, .custom-order-page textarea, .custom-order-page select,
.dashboard-page input, .dashboard-page textarea, .dashboard-page select,
#factoryBoard input, #factoryBoard textarea, #factoryBoard select { background: var(--bg-card); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); }
section[style*="padding"] h2, section[style*="padding"] h3 { color: var(--white) !important; }
section[style*="padding"] p, section[style*="padding"] li, section[style*="padding"] td { color: var(--text-dim) !important; }
.author-avatar-img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; margin-right: 12px; }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero h1 { font-size: 42px; }
  .hero::before { width: 100%; opacity: 0.5; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .product-row { grid-template-columns: 1fr; gap: 36px; }
  .product-row.reverse .product-img { order: 0; }
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-card:first-child { border-radius: var(--radius) var(--radius) 0 0; }
  .spec-card:last-child { border-radius: 0 0 var(--radius) var(--radius); }
  .detail-grid { grid-template-columns: 1fr; }
  .prod-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .cta-grid { grid-template-columns: 1fr; gap: 48px; }
  .factory-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .numbers-grid { gap: 24px; }
  .number-item .num { font-size: 38px; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header h1 { font-size: 32px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .nav-links { position: fixed; top: 68px; left: 0; width: 100%; background: rgba(11,15,21,0.98); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); flex-direction: column; padding: 24px; gap: 20px; display: none; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero { min-height: 85vh; padding: 120px 0 60px; }
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 15px; }
  .hero::before { width: 100%; opacity: 0.18; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; }
  .about-images .img-main { height: 200px; }
  .about-images-bottom img { height: 130px; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .section-intro h2 { font-size: 28px; }
  .numbers-grid { gap: 16px; }
  .number-item { min-width: 120px; }
  .number-item .num { font-size: 30px; }
  .factory-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .cert-grid { gap: 28px; }
  .cert-item img { width: 40px; height: 40px; }
  .product-card-body { padding: 18px; }
  .blog-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-items { gap: 16px; }
  .trust-item { font-size: 12px; }
  .page-header { padding: 120px 0 40px; }
  .page-header h1 { font-size: 28px; }
}