/* ═══════════════════════════════════════════════════════════
   LIXING TECH — Main Stylesheet
   Theme: Light Blue Professional
   ═══════════════════════════════════════════════════════════ */

/* ─── CSS Variables ──────────────────────────────────────── */
:root {
  --bg:          #eef4fb;
  --bg2:         #e3eef8;
  --bg3:         #d6e6f4;
  --surface:     #ffffff;
  --surface2:    #f0f6fc;
  --border:      rgba(30,80,150,0.12);
  --border-light:rgba(30,80,150,0.22);

  --text:        #0f2748;
  --text-muted:  #3a5a82;
  --text-dim:    #7a9abf;

  --accent:      #1565c0;
  --accent-light:#1e88e5;
  --accent-dim:  rgba(21,101,192,0.12);
  --accent-glow: rgba(21,101,192,0.25);

  --blue:        #1565c0;
  --blue-dim:    rgba(21,101,192,0.12);

  --font-display:'Rajdhani', 'Noto Sans SC', sans-serif;
  --font-body:   'Noto Sans SC', sans-serif;
  --font-mono:   'IBM Plex Mono', monospace;

  --radius:      6px;
  --radius-lg:   12px;
  --shadow:      0 4px 24px rgba(21,101,192,0.12);
  --shadow-lg:   0 12px 48px rgba(21,101,192,0.18);

  --header-h:    72px;
  --trans:       0.28s cubic-bezier(0.4,0,0.2,1);
}

/* ─── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: color var(--trans); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; display: block; }
ul { list-style: none; }
address { font-style: normal; }
button { cursor: pointer; border: none; background: none; }

/* ─── Container ──────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Section Titles ─────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 4px 14px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 12px;
}
.section-sub {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: all var(--trans);
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #0b0f1a;
}
.btn-primary:hover {
  background: var(--accent-light);
  color: #0b0f1a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-outline {
  border: 1.5px solid var(--border-light);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ─── Header ─────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(238,244,251,0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--trans);
}
.site-header.scrolled {
  background: rgba(238,244,251,0.99);
  box-shadow: var(--shadow);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text) !important;
  flex-shrink: 0;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-cn {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}
.logo-en {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-top: 2px;
}

/* Nav */
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav ul li {
  position: relative;
}
.main-nav ul li a {
  display: block;
  padding: 8px 14px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border-radius: var(--radius);
  transition: all var(--trans);
}
.main-nav ul li a:hover,
.main-nav ul li a.active {
  color: var(--text);
  background: var(--surface);
}
.main-nav ul li a.nav-cta {
  background: var(--accent);
  color: #0b0f1a !important;
  padding: 8px 18px;
  font-weight: 700;
}
.main-nav ul li a.nav-cta:hover {
  background: var(--accent-light);
}

/* Dropdown */
.has-dropdown { position: relative; }
.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 8px;
  box-shadow: var(--shadow-lg);
  flex-direction: column;
  gap: 2px;
  z-index: 999;
}
.dropdown.open { display: flex; }
.dropdown li a {
  font-size: 0.85rem !important;
  white-space: nowrap;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--border-light);
  padding: 6px 14px;
  border-radius: 2px;
  color: var(--text-muted) !important;
  transition: all var(--trans);
}
.lang-btn:hover {
  color: var(--accent) !important;
  border-color: var(--accent);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: all var(--trans);
}

/* ─── Hero Section ───────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 50%, rgba(59,130,246,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(212,168,50,0.06) 0%, transparent 50%),
    var(--bg);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 80px 0;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero-tag::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 24px;
  max-width: 700px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-top: 64px;
  overflow: hidden;
}
.stat-item {
  background: var(--surface);
  padding: 28px 24px;
  text-align: center;
  transition: background var(--trans);
}
.stat-item:hover { background: var(--surface2); }
.stat-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  display: block;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
  display: block;
}

/* ─── Products ───────────────────────────────────────────── */
.products-section {
  padding: 100px 0;
  background: var(--bg2);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.product-card {
  background: var(--surface);
  padding: 32px 28px;
  position: relative;
  transition: background var(--trans);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.product-card:hover { background: var(--surface2); }
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--trans);
}
.product-card:hover::before { transform: scaleX(1); }
.product-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.product-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
}
.product-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}
.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 8px;
}
.product-link::after {
  content: '→';
  transition: transform var(--trans);
}
.product-card:hover .product-link::after { transform: translateX(4px); }

/* ─── Why Us ─────────────────────────────────────────────── */
.why-section {
  padding: 100px 0;
  background: var(--bg);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.why-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  transition: transform var(--trans), box-shadow var(--trans);
}
.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.why-num {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 500;
  color: var(--border-light);
  position: absolute;
  top: 16px; right: 20px;
  line-height: 1;
  user-select: none;
}
.why-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.why-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.why-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ─── CTA Banner ─────────────────────────────────────────── */
.cta-section {
  padding: 80px 0;
  background: var(--bg3);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.cta-text p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ─── News ───────────────────────────────────────────────── */
.news-section {
  padding: 100px 0;
  background: var(--bg2);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--trans), box-shadow var(--trans);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.news-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.news-thumb svg { width: 100%; height: 100%; }
.news-body { padding: 24px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.news-cat {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 2px;
}
.news-date {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}
.news-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}
.news-summary {
  font-size: 0.855rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-readmore {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}
.news-readmore::after { content: '→'; transition: transform var(--trans); }
.news-card:hover .news-readmore::after { transform: translateX(4px); }

/* ─── About Page ─────────────────────────────────────────── */
.page-hero {
  padding: calc(var(--header-h) + 60px) 0 60px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--bg));
}
.page-hero-inner { position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--border-light); }
.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.page-sub {
  font-size: 1rem;
  color: var(--text-muted);
}

/* About content */
.about-section { padding: 80px 0; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.about-text p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.about-visual svg { width: 100%; }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
}
.cert-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: border-color var(--trans);
}
.cert-item:hover { border-color: var(--accent); }
.cert-item .cert-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
}
.cert-item .cert-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ─── Products Page ──────────────────────────────────────── */
.products-page { padding: 60px 0 100px; }
.products-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 48px;
}
.filter-btn {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--surface);
  transition: all var(--trans);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}
.product-detail {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.product-detail-header {
  background: var(--bg3);
  padding: 40px 48px;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px;
  align-items: center;
}
.product-detail-icon {
  width: 80px;
  height: 80px;
  background: var(--accent-dim);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}
.product-detail-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.product-detail-sub {
  color: var(--text-muted);
  font-size: 0.92rem;
}
.product-detail-body {
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
}
.spec-table { width: 100%; border-collapse: collapse; margin-top: 24px; }
.spec-table th,
.spec-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  text-align: left;
}
.spec-table th {
  color: var(--text-muted);
  font-weight: 500;
  width: 140px;
  font-family: var(--font-display);
}
.spec-table td { color: var(--text); }
.product-inquiry-box {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  height: fit-content;
}
.product-inquiry-box h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

/* ─── Contact & Inquiry ──────────────────────────────────── */
.contact-section { padding: 60px 0 100px; }
.contact-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 48px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.contact-card-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.contact-card-val {
  font-size: 0.92rem;
  color: var(--text);
  font-weight: 500;
}
.map-placeholder {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 200px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 24px;
}

/* Form */
.inquiry-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group.full { grid-column: 1 / -1; }
.form-group label {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  text-transform: uppercase;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: border-color var(--trans);
  outline: none;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group select option { background: var(--surface); }
.form-alert {
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  margin-bottom: 20px;
}
.form-alert.success {
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
  color: #86efac;
}
.form-alert.error {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  color: #fca5a5;
}

/* ─── News Detail ────────────────────────────────────────── */
.news-detail { padding: 60px 0 100px; }
.news-detail-inner { max-width: 800px; margin: 0 auto; }
.news-detail-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}
.news-detail-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 32px;
}
.news-detail-body {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.9;
}
.news-detail-body p { margin-bottom: 20px; }
.news-detail-body h3 {
  font-family: var(--font-display);
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 32px 0 12px;
}
.news-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 32px;
  transition: color var(--trans);
}
.news-back:hover { color: var(--accent); }

/* ─── Footer ─────────────────────────────────────────────── */
.site-footer {
  background: #d6e6f4;
  border-top: 1px solid var(--border);
}
.footer-top {
  display: grid;
  grid-template-columns: 280px repeat(3, 1fr);
  gap: 48px;
  padding: 60px 24px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-contact-brief p {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.footer-links-group h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 20px;
}
.footer-links-group ul li {
  margin-bottom: 10px;
}
.footer-links-group ul li a {
  font-size: 0.875rem;
  color: var(--text-muted);
}
.footer-links-group ul li a:hover { color: var(--accent); }
.footer-links-group address p {
  font-size: 0.855rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.6;
}
.footer-cert {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.cert-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(212,168,50,0.3);
  padding: 3px 10px;
  border-radius: 2px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}
.footer-icp { color: var(--text-dim); }

/* ─── Utilities ──────────────────────────────────────────── */
.text-accent { color: var(--accent); }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.text-center { text-align: center; }
.divider {
  height: 1px;
  background: var(--border);
  margin: 48px 0;
}

/* ─── Animations ─────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp 0.6s var(--trans) both; }
.fade-in-1 { animation-delay: 0.1s; }
.fade-in-2 { animation-delay: 0.2s; }
.fade-in-3 { animation-delay: 0.3s; }
.fade-in-4 { animation-delay: 0.4s; }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .product-detail-body { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .main-nav {
    position: fixed;
    top: var(--header-h); left: 0; right: 0; bottom: 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    display: none;
    overflow-y: auto;
    padding: 24px;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav ul li a { padding: 14px 0; border-bottom: 1px solid var(--border); border-radius: 0; }
  .dropdown { position: static; display: flex !important; background: none; box-shadow: none; border: none; padding: 0 0 0 16px; }
  .hamburger { display: flex; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom-inner { justify-content: center; text-align: center; }
  .product-detail-header { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-inner { text-align: center; justify-content: center; flex-direction: column; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
}