/* ============================================
   UVStart.com - B2B UV Ink Export Website
   Professional Industrial Stylesheet
   ============================================ */

:root {
  --primary-dark: #0a1929;
  --primary: #0d2847;
  --primary-light: #1565c0;
  --accent: #ff6f00;
  --accent-hover: #e65100;
  --bg-light: #f5f7fa;
  --bg-white: #ffffff;
  --text-dark: #1a2332;
  --text-body: #4a5568;
  --text-muted: #718096;
  --border: #e2e8f0;
  --success: #2e7d32;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 6px;
  --radius-lg: 12px;
  --header-h: 72px;
  --max-w: 1280px;
  --font: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', Consolas, monospace;
}

/* ====== Reset & Base ====== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text-body);
  background: var(--bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-light); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5 { color: var(--text-dark); font-weight: 700; line-height: 1.3; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ====== Header ====== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  background: var(--primary-dark);
  box-shadow: var(--shadow-md);
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto; height: 100%;
  display: flex; align-items: center; padding: 0 24px; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-text { font-size: 1.4rem; font-weight: 800; color: #fff; letter-spacing: -0.5px; }
.logo-text span { color: var(--accent); }
.logo-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #ff9100);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 800; color: #fff;
}

/* ====== Main Nav ====== */
.main-nav { display: flex; gap: 2px; flex: 1; justify-content: center; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 4px;
  padding: 8px 16px; font-size: .9rem; font-weight: 600;
  color: rgba(255,255,255,.85); border-radius: var(--radius);
  cursor: pointer; transition: all .2s; white-space: nowrap;
}
.nav-link:hover, .nav-item:hover .nav-link {
  background: rgba(255,255,255,.1); color: #fff;
}
.nav-link .caret { font-size: .7rem; transition: transform .2s; }
.nav-item:hover .caret { transform: rotate(180deg); }

/* Dropdown */
.dropdown {
  position: absolute; top: 100%; left: 0;
  min-width: 280px; background: #fff;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 8px; opacity: 0; visibility: hidden;
  transform: translateY(10px); transition: all .25s;
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 10px 16px; font-size: .88rem;
  color: var(--text-body); border-radius: var(--radius);
  transition: all .15s;
}
.dropdown a:hover { background: var(--bg-light); color: var(--primary); font-weight: 600; }
.dropdown a::before { content: '▸ '; color: var(--accent); font-size: .8rem; }

/* ====== Header Right ====== */
.header-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.lang-switch { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15); border-radius: var(--radius);
  color: #fff; font-size: .82rem; cursor: pointer; transition: all .2s;
}
.lang-btn:hover { background: rgba(255,255,255,.2); }
.lang-menu {
  position: absolute; top: 100%; right: 0; margin-top: 8px;
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg);
  min-width: 160px; padding: 6px; opacity: 0; visibility: hidden;
  transform: translateY(8px); transition: all .2s; z-index: 10;
}
.lang-switch:hover .lang-menu, .lang-switch.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu a {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; font-size: .85rem; color: var(--text-body);
  border-radius: var(--radius); transition: all .15s;
}
.lang-menu a:hover { background: var(--bg-light); }
.lang-menu a.active { color: var(--accent); font-weight: 600; }
.lang-menu .flag { font-size: 1.1rem; }

.btn-quote {
  padding: 8px 20px; background: var(--accent); color: #fff;
  border: none; border-radius: var(--radius); font-size: .88rem;
  font-weight: 600; cursor: pointer; transition: all .2s; white-space: nowrap;
}
.btn-quote:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.mobile-toggle { display: none; flex-direction: column; gap: 4px; cursor: pointer; padding: 8px; }
.mobile-toggle span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: .3s; }

/* ====== Hero ====== */
.hero {
  margin-top: var(--header-h);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #0a2540 100%);
  color: #fff; padding: 80px 0; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -10%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,111,0,.15), transparent 70%);
}
.hero-inner { position: relative; z-index: 1; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; background: rgba(255,111,0,.15);
  border: 1px solid rgba(255,111,0,.3); border-radius: 50px;
  font-size: .82rem; color: #ffb74d; margin-bottom: 24px;
}
.hero h1 { font-size: 2.8rem; color: #fff; margin-bottom: 20px; max-width: 720px; }
.hero h1 .highlight { color: var(--accent); }
.hero p { font-size: 1.12rem; color: rgba(255,255,255,.8); max-width: 640px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary { padding: 14px 32px; background: var(--accent); color: #fff; border: none; border-radius: var(--radius); font-size: 1rem; font-weight: 600; cursor: pointer; transition: all .2s; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline { padding: 14px 32px; background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.3); border-radius: var(--radius); font-size: 1rem; font-weight: 600; cursor: pointer; transition: all .2s; }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.1); }
.hero-stats { display: flex; gap: 48px; margin-top: 56px; flex-wrap: wrap; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--accent); }
.hero-stat .label { font-size: .85rem; color: rgba(255,255,255,.6); }

/* ====== Section Base ====== */
.section { padding: 64px 0; }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head h2 { font-size: 2rem; margin-bottom: 12px; }
.section-head p { color: var(--text-muted); max-width: 680px; margin: 0 auto; }
.section-head .eyebrow { display: inline-block; padding: 4px 14px; background: rgba(21,101,192,.1); color: var(--primary-light); border-radius: 50px; font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }

/* ====== Feature Cards ====== */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 24px; }
.feature-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 24px; text-align: center;
  transition: all .3s;
}
.feature-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.feature-icon {
  width: 60px; height: 60px; margin: 0 auto 20px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; background: rgba(21,101,192,.08);
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature-card p { font-size: .9rem; color: var(--text-muted); }

/* ====== Product Grid ====== */
.products-section { background: var(--bg-light); }
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px,1fr)); gap: 24px; }
.product-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; transition: all .3s;
  display: flex; flex-direction: column;
}
.product-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product-img {
  width: 100%; height: 200px; background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem; color: var(--primary-light); position: relative;
}
.product-img .cert-badge {
  position: absolute; top: 12px; right: 12px;
  background: var(--success); color: #fff; font-size: .7rem;
  padding: 3px 10px; border-radius: 50px; font-weight: 600;
}
.product-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
.product-body .desc { font-size: .85rem; color: var(--text-muted); margin-bottom: 16px; flex: 1; }
.product-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.product-tag {
  font-size: .72rem; padding: 3px 8px; border-radius: 4px;
  background: var(--bg-light); color: var(--text-muted); border: 1px solid var(--border);
}
.product-tag.cert { background: rgba(46,125,50,.1); color: var(--success); border-color: rgba(46,125,50,.2); }
.product-tag.type { background: rgba(21,101,192,.1); color: var(--primary-light); border-color: rgba(21,101,192,.2); }
.product-meta { font-size: .8rem; color: var(--text-muted); margin-bottom: 16px; }
.product-meta div { display: flex; gap: 6px; padding: 3px 0; }
.product-meta strong { color: var(--text-dark); min-width: 70px; }
.product-actions { display: flex; gap: 10px; }
.btn-card {
  flex: 1; padding: 10px; text-align: center; font-size: .85rem;
  border: none; border-radius: var(--radius); font-weight: 600;
  cursor: pointer; transition: all .2s;
}
.btn-card.primary { background: var(--primary); color: #fff; }
.btn-card.primary:hover { background: var(--primary-light); }
.btn-card.accent { background: var(--accent); color: #fff; }
.btn-card.accent:hover { background: var(--accent-hover); }

/* ====== Filter Sidebar ====== */
.filter-layout { display: grid; grid-template-columns: 280px 1fr; gap: 32px; align-items: start; }
.filter-sidebar {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px; position: sticky; top: calc(var(--header-h) + 20px);
}
.filter-group { margin-bottom: 24px; }
.filter-group:last-child { margin-bottom: 0; }
.filter-group h4 { font-size: .92rem; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 6px; }
.filter-group h4 .icon { color: var(--accent); }
.filter-option { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: .85rem; cursor: pointer; }
.filter-option input { width: 16px; height: 16px; accent-color: var(--primary-light); cursor: pointer; }
.filter-option:hover { color: var(--primary); }
.filter-option .count { margin-left: auto; font-size: .75rem; color: var(--text-muted); }
.filter-actions { display: flex; gap: 8px; margin-top: 20px; }
.btn-filter { flex: 1; padding: 8px; font-size: .85rem; border: none; border-radius: var(--radius); cursor: pointer; font-weight: 600; transition: .2s; }
.btn-filter.clear { background: var(--bg-light); color: var(--text-body); border: 1px solid var(--border); }
.btn-filter.clear:hover { background: #e2e8f0; }
.filter-results-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.filter-results-head h2 { font-size: 1.4rem; }
.filter-active { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.filter-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; background: rgba(21,101,192,.1);
  border: 1px solid rgba(21,101,192,.2); border-radius: 50px;
  font-size: .8rem; color: var(--primary-light); cursor: pointer;
}
.filter-chip:hover { background: rgba(21,101,192,.2); }
.filter-chip .x { font-weight: 700; }

/* ====== Category Nav Cards ====== */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 20px; }
.cat-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px 24px; transition: all .3s; cursor: pointer; position: relative; overflow: hidden;
}
.cat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.cat-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.cat-card:hover::before { transform: scaleX(1); }
.cat-card .cat-icon { font-size: 2.2rem; margin-bottom: 16px; }
.cat-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.cat-card p { font-size: .85rem; color: var(--text-muted); margin-bottom: 12px; }
.cat-card .cat-count { font-size: .8rem; color: var(--primary-light); font-weight: 600; }

/* ====== Product Detail Page ====== */
.detail-layout { display: grid; grid-template-columns: 1fr 380px; gap: 40px; }
.detail-main { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; }
.detail-img {
  width: 100%; height: 400px; background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center;
  font-size: 5rem; color: var(--primary-light); margin-bottom: 32px;
}
.detail-main h1 { font-size: 1.8rem; margin-bottom: 12px; }
.detail-main .sku { font-family: var(--font-mono); font-size: .85rem; color: var(--text-muted); margin-bottom: 20px; }
.detail-desc { font-size: .95rem; margin-bottom: 28px; line-height: 1.7; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.detail-specs { width: 100%; border-collapse: collapse; margin-bottom: 28px; }
.detail-specs th, .detail-specs td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: .88rem; }
.detail-specs th { background: var(--bg-light); width: 200px; color: var(--text-dark); font-weight: 600; }
.detail-specs td { color: var(--text-body); }
.detail-dims { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; margin-bottom: 28px; }
.dim-card { background: var(--bg-light); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.dim-card .dim-label { font-size: .75rem; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); margin-bottom: 6px; }
.dim-card .dim-values { display: flex; flex-wrap: wrap; gap: 6px; }
.dim-card .dim-val { font-size: .82rem; padding: 3px 10px; background: #fff; border: 1px solid var(--border); border-radius: 4px; color: var(--text-dark); }

.detail-sidebar { position: sticky; top: calc(var(--header-h) + 20px); }
.inquiry-box {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; box-shadow: var(--shadow-sm);
}
.inquiry-box h3 { font-size: 1.2rem; margin-bottom: 8px; }
.inquiry-box .sub { font-size: .85rem; color: var(--text-muted); margin-bottom: 24px; }
.inquiry-box .price-note {
  background: rgba(255,111,0,.08); border: 1px solid rgba(255,111,0,.2);
  border-radius: var(--radius); padding: 12px 16px; font-size: .85rem; color: var(--accent-hover); margin-bottom: 20px;
}
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .82rem; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: .88rem; font-family: var(--font); transition: border .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(21,101,192,.1);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.btn-submit {
  width: 100%; padding: 14px; background: var(--accent); color: #fff;
  border: none; border-radius: var(--radius); font-size: 1rem; font-weight: 600;
  cursor: pointer; transition: all .2s;
}
.btn-submit:hover { background: var(--accent-hover); box-shadow: var(--shadow-md); }
.inquiry-contact { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--border); }
.inquiry-contact .item { display: flex; gap: 10px; font-size: .85rem; margin-bottom: 10px; }
.inquiry-contact .item .ic { color: var(--primary-light); }

/* ====== Certifications Badges ====== */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 20px; }
.cert-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px 20px; text-align: center; transition: all .3s;
}
.cert-card:hover { box-shadow: var(--shadow-md); border-color: var(--success); }
.cert-badge-lg {
  width: 80px; height: 80px; margin: 0 auto 16px; border-radius: 50%;
  background: linear-gradient(135deg, #2e7d32, #43a047); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 800; letter-spacing: -1px;
}
.cert-card h3 { font-size: 1rem; margin-bottom: 6px; }
.cert-card p { font-size: .82rem; color: var(--text-muted); }

/* ====== FAQ ====== */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden;
}
.faq-q {
  width: 100%; padding: 18px 24px; background: none; border: none; text-align: left;
  font-size: .95rem; font-weight: 600; color: var(--text-dark); cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q .icon { color: var(--accent); font-size: 1.2rem; transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-item.open .faq-a { max-height: 500px; }
.faq-a-inner { padding: 0 24px 20px; font-size: .9rem; color: var(--text-body); line-height: 1.7; }

/* ====== About Page ====== */
.about-hero { margin-top: var(--header-h); background: var(--primary-dark); color: #fff; padding: 64px 0; text-align: center; }
.about-hero h1 { color: #fff; font-size: 2.4rem; margin-bottom: 16px; }
.about-hero p { color: rgba(255,255,255,.7); max-width: 640px; margin: 0 auto; }
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 32px; margin-top: 48px; }
.about-card { text-align: center; }
.about-card .big-num { font-size: 2.5rem; font-weight: 800; color: var(--accent); margin-bottom: 8px; }
.about-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.about-card p { font-size: .88rem; color: var(--text-muted); }

/* ====== Contact Page ====== */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; }
.contact-info-card h3 { font-size: 1.3rem; margin-bottom: 20px; }
.contact-row { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-row .ic { width: 44px; height: 44px; border-radius: 50%; background: rgba(21,101,192,.08); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; color: var(--primary-light); flex-shrink: 0; }
.contact-row .info label { display: block; font-size: .78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 4px; }
.contact-row .info span { font-size: .92rem; color: var(--text-dark); font-weight: 600; }
.contact-form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; }
.contact-form h3 { font-size: 1.3rem; margin-bottom: 8px; }
.contact-form .sub { font-size: .88rem; color: var(--text-muted); margin-bottom: 24px; }

/* ====== Breadcrumb ====== */
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: .82rem; color: var(--text-muted); margin-bottom: 24px; }
.breadcrumb a { color: var(--primary-light); }
.breadcrumb .sep { color: var(--border); }

/* ====== Footer ====== */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,.7); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo-text { margin-bottom: 16px; }
.footer-brand p { font-size: .88rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: .92rem; margin-bottom: 16px; font-weight: 600; }
.footer-col a { display: block; padding: 4px 0; font-size: .85rem; color: rgba(255,255,255,.6); transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-cert { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.footer-cert span { font-size: .72rem; padding: 3px 10px; background: rgba(255,255,255,.1); border-radius: 4px; color: rgba(255,255,255,.6); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-size: .82rem; }
.footer-bottom a { color: rgba(255,255,255,.5); }

/* ====== Page Banner ====== */
.page-banner { margin-top: var(--header-h); background: var(--primary-dark); color: #fff; padding: 48px 0; }
.page-banner h1 { color: #fff; font-size: 2rem; margin-bottom: 8px; }
.page-banner p { color: rgba(255,255,255,.7); font-size: .95rem; }

/* ====== Empty State ====== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .icon { font-size: 3rem; margin-bottom: 16px; opacity: .3; }
.empty-state h3 { font-size: 1.2rem; margin-bottom: 8px; }

/* ====== Schema Code Block ====== */
.schema-block {
  background: var(--primary-dark); color: #a5d6ff; border-radius: var(--radius);
  padding: 20px; font-family: var(--font-mono); font-size: .8rem; line-height: 1.5;
  overflow-x: auto; white-space: pre; margin: 16px 0; border: 1px solid rgba(255,255,255,.1);
}
.schema-block .key { color: #79c0ff; }
.schema-block .str { color: #a5d6ff; }
.schema-block .num { color: #ffa657; }

/* ====== About Page Extras ====== */
.about-intro { font-size: 1rem; line-height: 1.8; color: var(--text-body); max-width: 880px; margin-bottom: 40px; }
.about-icon { width: 56px; height: 56px; margin: 0 auto 16px; color: var(--primary-light); display: flex; align-items: center; justify-content: center; background: rgba(21,101,192,.08); border-radius: 50%; }
.about-stats { margin-top: 48px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 32px; text-align: center; }
.stat-item { padding: 24px 16px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.stat-number { font-size: 2.5rem; font-weight: 800; color: var(--accent); margin-bottom: 6px; }
.stat-label { font-size: .88rem; color: var(--text-muted); }

/* ====== Certifications Process ====== */
.section-alt { background: var(--bg-light); }
.process-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 24px; }
.process-step { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 24px; position: relative; }
.step-number {
  width: 40px; height: 40px; border-radius: 50%; background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 700; margin-bottom: 16px;
}
.step-content h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step-content p { font-size: .88rem; color: var(--text-muted); line-height: 1.6; }

/* ====== Filter Main ====== */
.filter-main { min-height: 400px; }

/* ====== Responsive ====== */
@media (max-width: 1024px) {
  .filter-layout { grid-template-columns: 1fr; }
  .filter-sidebar { position: static; }
  .detail-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .main-nav, .header-right .lang-switch { display: none; }
  .mobile-toggle { display: flex; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .section { padding: 40px 0; }
  .section-head h2 { font-size: 1.5rem; }
  .container { padding: 0 16px; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; text-align: center; }
  .product-actions { flex-direction: column; }
}