/* ============================================
   GenePure / 重鼎生物 — Institutional Emerald
   Design: Warm Authority · Modern Biotech · Precise
   Emerald Green + Warm White + Gold Accent
   ============================================ */

:root {
  /* ── Background Layers ── */
  --bg-warm: #fafaf6;
  --bg-card: #ffffff;
  --bg-alt: #f3f1eb;
  --bg-footer: #ede9e1;
  --bg-dark: #0a1f18;
  --bg-dark-2: #0f2a21;

  /* ── Emerald Primary ── */
  --emerald: #047857;
  --emerald-dark: #065f46;
  --emerald-deep: #064e3b;
  --emerald-light: #059669;
  --emerald-bright: #10b981;
  --emerald-dim: rgba(4, 120, 87, 0.07);
  --emerald-faint: rgba(4, 120, 87, 0.04);
  --emerald-glow: rgba(4, 120, 87, 0.15);

  /* ── Navy Secondary ── */
  --navy: #1a365d;
  --navy-light: #2c5282;
  --navy-dim: rgba(26, 54, 93, 0.06);

  /* ── Gold Accent (sparingly) ── */
  --gold: #b45309;
  --gold-light: #d97706;
  --gold-dim: rgba(180, 83, 9, 0.08);

  /* ── Text Hierarchy ── */
  --text-primary: #1a202c;
  --text-body: #4a5568;
  --text-muted: #718096;
  --text-faint: #a0aec0;
  --text-on-dark: #e8edf0;
  --text-on-dark-muted: #9aada0;

  /* ── Borders ── */
  --border: #e2ded4;
  --border-light: #eeebe4;
  --border-card: #e8e4db;
  --border-emerald: rgba(4, 120, 87, 0.15);
  --border-gold: rgba(180, 83, 9, 0.12);

  /* ── Shadows ── */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.05), 0 6px 16px rgba(0,0,0,0.04);
  --shadow-elevated: 0 2px 8px rgba(0,0,0,0.06), 0 12px 28px rgba(0,0,0,0.05);
  --shadow-emerald: 0 4px 20px rgba(4, 120, 87, 0.1);

  /* ── Geometry ── */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* ── Transitions ── */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 180ms;
  --duration: 300ms;
  --duration-slow: 500ms;

  /* ── Typography ── */
  --font-display: 'DM Serif Display', 'Noto Serif SC', 'Source Han Serif SC', 'STSong', 'Songti SC', 'SimSun', '华文宋体', '宋体', serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', 'DM Sans', -apple-system, '微软雅黑', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', 'Courier New', 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-body);
  color: var(--text-body);
  background: var(--bg-warm);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  letter-spacing: 0.004em;
}

::selection { background: rgba(4, 120, 87, 0.2); color: var(--text-primary); }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-warm); }
::-webkit-scrollbar-thumb { background: var(--emerald-dim); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--emerald); }

a { color: var(--emerald); text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
a:hover { color: var(--emerald-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 28px; }
.container-narrow { max-width: 900px; margin: 0 auto; padding: 0 28px; }

/* ── Gold accent line (reusable) ── */
.gold-line {
  width: 48px; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border: none; border-radius: 2px;
}
.gold-line.center { margin: 0 auto; }

/* ── Subtle dot pattern background ── */
.dot-pattern {
  position: relative;
}
.dot-pattern::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(4,120,87,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -0.005em;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--emerald);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  display: block;
}
.section-title {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.005em;
}
.section-title.center, .section-subtitle.center { text-align: center; }
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 600px;
}
.section-header {
  margin-bottom: 56px;
}
.section-header.center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ============================================
   SECTIONS
   ============================================ */
.section { padding: 100px 0; position: relative; }
.section-sm { padding: 60px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-white { background: var(--bg-card); }
.section-dark {
  background: linear-gradient(160deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}
.section-dark::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(4,120,87,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 {
  color: #fff;
}
.section-dark .section-title { color: #fff; }
.section-dark .section-subtitle { color: var(--text-on-dark-muted); }
.section-dark .section-label { color: var(--emerald-bright); }

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-slow) var(--ease-out),
              background var(--duration-slow) var(--ease-out),
              box-shadow var(--duration-slow) var(--ease-out);
}
.nav.scrolled {
  border-bottom-color: var(--border);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}
.nav-logo .logo-img { height: 66px; width: auto; display: block; }
.nav-logo .brand-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.01em;
}
.nav-links { display: flex; align-items: center; gap: 1px; }
.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}
.nav-links a:hover { color: var(--emerald); background: var(--emerald-faint); }
.nav-links a.active {
  color: var(--emerald);
  background: var(--emerald-dim);
  font-weight: 600;
}
.nav-links a.lang-btn {
  display: flex; align-items: center; gap: 4px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 14px;
}
.nav-links a.lang-btn:hover {
  border-color: var(--emerald);
  color: var(--emerald);
  background: var(--emerald-faint);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px 4px;
  background: none;
  border: none;
  border-radius: 4px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration) var(--ease-out);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration) var(--ease-out);
  text-decoration: none;
  letter-spacing: 0.01em;
  border: none;
  font-family: var(--font-body);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: linear-gradient(135deg, var(--emerald) 0%, var(--emerald-dark) 100%);
  color: #fff;
  box-shadow: 0 2px 12px rgba(4, 120, 87, 0.2);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(4, 120, 87, 0.3);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--emerald);
  border: 1.5px solid var(--emerald);
}
.btn-outline:hover {
  background: var(--emerald);
  color: #fff;
  transform: translateY(-1px);
}
.btn-outline-dark {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-outline-dark:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.06);
  color: #fff;
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
  color: #fff;
  box-shadow: 0 2px 12px rgba(180, 83, 9, 0.2);
}
.btn-gold:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(180, 83, 9, 0.3);
  color: #fff;
}

/* ============================================
   HERO — Asymmetric Emerald
   ============================================ */
.hero {
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(165deg, #fafaf6 0%, #f3f1eb 40%, #eef3e9 100%);
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -80px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(4,120,87,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px; left: 10%;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(180,83,9,0.04) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: rgba(4, 120, 87, 0.06);
  border: 1px solid var(--border-emerald);
  border-radius: 50px;
  color: var(--emerald);
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 28px;
  letter-spacing: 0.03em;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--emerald-bright);
  animation: heroPulse 2.5s ease-in-out infinite;
}
@keyframes heroPulse {
  0%, 100% { opacity: 0.4; transform: scale(0.7); }
  50% { opacity: 1; transform: scale(1.3); }
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.12;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.hero h1 .highlight {
  color: var(--emerald);
  position: relative;
}
.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: 2px;
  opacity: 0.5;
}
.hero .hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 36px;
  line-height: 1.85;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions.center { justify-content: center; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

/* Hero visual (right side) */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-emblem {
  width: 360px; height: 360px;
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(4,120,87,0.06) 0%, rgba(4,120,87,0.02) 100%);
  border: 1.5px solid var(--border-emerald);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-emblem::before {
  content: '';
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  border: 1px dashed rgba(4, 120, 87, 0.1);
}
.hero-emblem .em-stat {
  font-family: var(--font-display);
  font-size: 4.5rem;
  font-weight: 700;
  color: var(--emerald);
  line-height: 1;
}
.hero-emblem .em-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 8px;
  letter-spacing: 0.06em;
}
.hero-float {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.hero-float.f1 {
  width: 12px; height: 12px;
  background: var(--gold-light);
  top: 40px; right: 20px;
  box-shadow: 0 0 16px rgba(180,83,9,0.3);
  animation: floatA 6s ease-in-out infinite;
}
.hero-float.f2 {
  width: 8px; height: 8px;
  background: var(--emerald-bright);
  bottom: 60px; left: 10px;
  box-shadow: 0 0 12px rgba(4,120,87,0.3);
  animation: floatB 8s ease-in-out infinite;
}
.hero-float.f3 {
  width: 6px; height: 6px;
  background: var(--emerald-light);
  top: 60px; left: 40px;
  box-shadow: 0 0 10px rgba(4,120,87,0.25);
  animation: floatA 7s ease-in-out 2s infinite;
}
@keyframes floatA {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(12px, -16px); }
  66% { transform: translate(-8px, -8px); }
}
@keyframes floatB {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-14px, -20px); }
}

/* Hero canvas — DNA helix animation background */
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}

/* Hero variants for inner pages */
.hero-sm {
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(165deg, #fafaf6 0%, #f3f1eb 60%);
}
.hero-sm .container { position: relative; z-index: 1; }

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
  padding: 140px 0 60px;
  background: linear-gradient(165deg, #fafaf6 0%, #f3f1eb 70%);
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  top: -100px; right: -60px;
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(4,120,87,0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: var(--text-primary);
}
.page-header p { color: var(--text-muted); font-size: 1.02rem; margin-top: 14px; max-width: 560px; }
.page-header .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.81rem;
  color: var(--text-faint);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.page-header .breadcrumb a { color: var(--text-muted); }
.page-header .breadcrumb a:hover { color: var(--emerald); }
.breadcrumb-sep { margin: 0 2px; color: var(--border); user-select: none; }

/* ============================================
   FEATURE CARDS — Numbered Journal Style
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border-card);
  transition: all var(--duration) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: attr(data-num);
  position: absolute;
  top: 16px; right: 24px;
  font-family: var(--font-display);
  font-size: 3.5rem;
  color: rgba(4, 120, 87, 0.04);
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
  transition: color var(--duration) var(--ease-out);
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--border-emerald); box-shadow: var(--shadow-elevated), var(--shadow-emerald); }
.feature-card:hover::before { color: rgba(4, 120, 87, 0.08); }
.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  background: var(--emerald-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.3rem;
  color: var(--emerald);
  transition: all var(--duration) var(--ease-out);
}
.feature-card:hover .feature-icon {
  background: var(--emerald);
  color: #fff;
  transform: scale(1.05);
}
.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.feature-card p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.75; }

/* Alternate feature layout — 2-col staggered */
.features-alt {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 48px;
}
.feature-alt-card {
  display: flex;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--duration) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.feature-alt-card::before {
  content: attr(data-num);
  position: absolute;
  top: -10px; right: 0;
  font-family: var(--font-display);
  font-size: 4.5rem;
  color: rgba(4, 120, 87, 0.03);
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
  z-index: 0;
  transition: color var(--duration) var(--ease-out);
}
.feature-alt-card:hover { padding-left: 8px; }
.feature-alt-card:hover::before { color: rgba(4, 120, 87, 0.08); }
.feature-alt-card .fa-icon {
  width: 56px; min-width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--emerald-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--emerald);
  transition: all var(--duration) var(--ease-out);
  position: relative;
  z-index: 1;
}
.feature-alt-card:hover .fa-icon { background: var(--emerald); color: #fff; }
.feature-alt-card h3 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 6px; position: relative; z-index: 1; }
.feature-alt-card p { color: var(--text-muted); font-size: 0.87rem; line-height: 1.7; position: relative; z-index: 1; }

/* ============================================
   PRODUCT / CATEGORY CARDS
   ============================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.category-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-card);
  transition: all var(--duration) var(--ease-out);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--emerald), var(--emerald-light));
  opacity: 0;
  transition: opacity var(--duration) var(--ease-out);
}
.category-card:hover { transform: translateY(-4px); border-color: var(--border-emerald); box-shadow: var(--shadow-elevated); }
.category-card:hover::before { opacity: 1; }
.category-card .cat-num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--emerald);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 12px;
}
.category-card h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 8px; color: var(--text-primary); }
.category-card p { color: var(--text-muted); font-size: 0.86rem; line-height: 1.7; margin-bottom: 18px; flex: 1; }
.category-card .cat-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-faint);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}
.category-card .cat-link {
  color: var(--emerald);
  font-weight: 600;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--duration-fast) var(--ease-out);
}
.category-card .cat-link:hover { gap: 10px; }

/* Category card horizontal variant */
.category-card-h {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border-card);
  transition: all var(--duration) var(--ease-out);
  align-items: center;
  margin-bottom: 16px;
}
.category-card-h:hover { border-color: var(--border-emerald); box-shadow: var(--shadow-card); }
.category-card-h .cat-visual {
  width: 200px; height: 120px;
  background: var(--emerald-dim);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--emerald);
  font-weight: 700;
}

/* Product grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
}
.product-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border-card);
  transition: all var(--duration) var(--ease-out);
  position: relative;
}
.product-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--emerald), var(--emerald-light));
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transition: opacity var(--duration) var(--ease-out);
}
.product-card:hover { transform: translateY(-3px); border-color: var(--border-emerald); box-shadow: var(--shadow-card); }
.product-card:hover::before { opacity: 1; }
.product-card .product-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--emerald-dim);
  color: var(--emerald);
  font-size: 0.68rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
  text-transform: uppercase;
}
.product-card h4 { font-size: 0.96rem; margin-bottom: 6px; color: var(--text-primary); font-weight: 600; }
.product-card h4 a { color: var(--text-primary); }
.product-card h4 a:hover { color: var(--emerald); }
.product-card .product-en-name { font-size: 0.76rem; color: var(--text-muted); margin-bottom: 10px; font-style: italic; }
.product-card p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.65; }

/* Featured product card (larger) */
.product-card-featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 36px;
  align-items: center;
}
.product-card-featured .product-visual {
  background: var(--emerald-dim);
  border-radius: var(--radius);
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--emerald);
}

/* ============================================
   SERIES SECTION (sidebar layout)
   ============================================ */
.content-with-sidebar {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}
.sidebar { position: sticky; top: 96px; }
.sidebar-menu {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.sidebar-menu a {
  display: block;
  padding: 14px 20px;
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border-light);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}
.sidebar-menu a:last-child { border-bottom: none; }
.sidebar-menu a:hover { background: var(--emerald-faint); color: var(--emerald); padding-left: 24px; }
.sidebar-menu a.active {
  background: var(--emerald-dim);
  color: var(--emerald);
  font-weight: 600;
  border-left: 3px solid var(--emerald);
  padding-left: 24px;
}
.series-section { margin-bottom: 60px; }
.series-section:last-child { margin-bottom: 0; }
.series-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.series-header h2 { font-family: var(--font-display); font-size: 1.4rem; }
.series-header .series-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--emerald);
  background: var(--emerald-dim);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.06em;
}
.series-header p { color: var(--text-muted); font-size: 0.86rem; margin-top: 6px; }

/* ============================================
   STATS BAR — Dark Emerald Band
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  text-align: center;
}
.stat-item {
  padding: 24px 16px;
  position: relative;
}
.stat-item::after {
  content: '';
  position: absolute;
  right: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: rgba(255,255,255,0.1);
}
.stat-item:last-child::after { display: none; }
.stat-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--emerald-bright);
  line-height: 1.15;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--text-on-dark-muted);
  letter-spacing: 0.04em;
}

/* ============================================
   NEWS LIST
   ============================================ */
.news-list { display: flex; flex-direction: column; gap: 20px; }

/* Featured news item */
.news-item-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-card);
  transition: all var(--duration) var(--ease-out);
}
.news-item-featured:hover { border-color: var(--border-emerald); box-shadow: var(--shadow-elevated); }
.news-item-featured .news-img {
  background: linear-gradient(135deg, var(--emerald-dim), var(--emerald-faint));
  display: flex; align-items: center; justify-content: center;
  min-height: 220px;
}
.news-item-featured .news-img .placeholder-icon {
  font-size: 4rem; color: var(--emerald); opacity: 0.3;
}
.news-item-featured .news-body { padding: 36px; display: flex; flex-direction: column; justify-content: center; }

.news-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-card);
  transition: all var(--duration) var(--ease-out);
  align-items: center;
}
.news-item:hover { transform: translateX(4px); border-color: var(--border-emerald); box-shadow: var(--shadow-sm); }
.news-date {
  text-align: center;
  padding: 14px 8px;
  background: var(--emerald-faint);
  border-radius: var(--radius);
  border: 1px solid var(--border-emerald);
}
.news-date .day {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--emerald);
  display: block;
  line-height: 1;
}
.news-date .month {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}
.news-content h3 { font-size: 1.02rem; margin-bottom: 6px; }
.news-content h3 a { color: var(--text-primary); }
.news-content h3 a:hover { color: var(--emerald); }
.news-content p { color: var(--text-muted); font-size: 0.84rem; line-height: 1.65; }
.news-arrow { color: var(--text-faint); font-size: 1.2rem; transition: all var(--duration-fast) var(--ease-out); }
.news-item:hover .news-arrow { color: var(--emerald); transform: translateX(4px); }

/* News detail page */
.news-detail-header {
  padding: 140px 0 40px;
  text-align: center;
}
.news-detail-header h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  max-width: 760px;
  margin: 0 auto 16px;
}
.news-detail-header .meta {
  font-size: 0.84rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}
.news-detail-body {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 28px 80px;
  font-size: 1rem;
  line-height: 2;
  color: var(--text-body);
}
.news-detail-body p { margin-bottom: 20px; text-indent: 2em; }
.news-detail-body h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 48px 0 16px;
  color: var(--text-primary);
}
.news-detail-body h2:first-child { margin-top: 0; }

/* ============================================
   FAQ ACCORDION
   ============================================ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--duration) var(--ease-out);
}
.faq-item:hover { border-color: var(--border); }
.faq-item.active { border-color: var(--border-emerald); box-shadow: var(--shadow-emerald); }
.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  user-select: none;
  gap: 16px;
  font-family: var(--font-display);
}
.faq-question .faq-icon {
  width: 28px; height: 28px; min-width: 28px;
  border-radius: 50%;
  background: var(--emerald-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration) var(--ease-spring);
  font-size: 0.85rem;
  color: var(--emerald);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--emerald);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out), padding 0.4s var(--ease-out);
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.9;
}
.faq-item.active .faq-answer { max-height: 600px; padding: 0 24px 22px; }

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-info h3 { font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 8px; }
.contact-info > p { color: var(--text-muted); margin-bottom: 36px; line-height: 1.8; }
.contact-details { display: flex; flex-direction: column; gap: 12px; }
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px;
  border-radius: var(--radius);
  transition: all var(--duration-fast) var(--ease-out);
  border: 1px solid transparent;
}
.contact-item:hover { background: var(--bg-card); border-color: var(--border-card); }
.contact-item .ci-icon {
  width: 46px; height: 46px; min-width: 46px;
  border-radius: var(--radius);
  background: var(--emerald-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--emerald);
}
.contact-item h4 {
  font-size: 0.74rem;
  color: var(--text-faint);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}
.contact-item p { font-size: 0.95rem; color: var(--text-primary); font-weight: 500; }
.contact-form {
  background: var(--bg-card);
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
}
.contact-form h3 { font-family: var(--font-display); margin-bottom: 24px; font-size: 1.3rem; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text-body);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: var(--font-body);
  transition: all var(--duration-fast) var(--ease-out);
  background: var(--bg-warm);
  color: var(--text-primary);
}
.form-group input:hover,
.form-group textarea:hover,
.form-group select:hover { border-color: var(--border-emerald); }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--emerald);
  box-shadow: 0 0 0 3px var(--emerald-dim);
  background: #fff;
}
.form-group textarea { min-height: 130px; resize: vertical; }
.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='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-faint); }

/* ============================================
   DOWNLOADS
   ============================================ */
.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.download-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-card);
  transition: all var(--duration) var(--ease-out);
}
.download-item:hover { transform: translateY(-2px); border-color: var(--border-emerald); box-shadow: var(--shadow-card); }
.download-icon {
  width: 54px; height: 54px; min-width: 54px;
  border-radius: var(--radius);
  background: var(--emerald-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--emerald);
}
.download-info h4 { font-size: 0.9rem; color: var(--text-primary); margin-bottom: 4px; }
.download-info span { font-size: 0.78rem; color: var(--text-faint); font-family: var(--font-mono); }
.download-btn {
  margin-left: auto;
  padding: 8px 20px;
  border-radius: var(--radius);
  background: var(--emerald-dim);
  color: var(--emerald);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
  border: 1px solid transparent;
  text-decoration: none;
}
.download-btn:hover { background: var(--emerald); color: #fff; }

/* Download category cards */
.download-cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.download-cat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-card);
  text-align: center;
  transition: all var(--duration) var(--ease-out);
  cursor: pointer;
}
.download-cat-card:hover { transform: translateY(-4px); border-color: var(--border-emerald); box-shadow: var(--shadow-elevated); }
.download-cat-card .cat-icon-circle {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--emerald-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
  color: var(--emerald);
  transition: all var(--duration) var(--ease-out);
}
.download-cat-card:hover .cat-icon-circle {
  background: var(--emerald);
  color: #fff;
  transform: scale(1.05);
}
.download-cat-card h3 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 6px; }
.download-cat-card p { color: var(--text-muted); font-size: 0.84rem; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-footer);
  padding: 64px 0 0;
  position: relative;
  border-top: 1px solid var(--border);
}
.footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--emerald), var(--gold-light), transparent);
  opacity: 0.5;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.footer-brand p { font-size: 0.82rem; line-height: 1.8; max-width: 360px; color: var(--text-muted); }
.footer-col h4 {
  color: var(--text-body);
  font-size: 0.72rem;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
  font-family: var(--font-mono);
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.83rem;
  padding: 5px 0;
  transition: all var(--duration-fast) var(--ease-out);
}
.footer-col a:hover { color: var(--emerald); padding-left: 4px; }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  color: var(--text-faint);
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

/* ============================================
   SCROLL-TO-TOP
   ============================================ */
.scroll-top-btn {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--emerald);
  color: #fff;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(4, 120, 87, 0.3);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
  z-index: 999;
}
.scroll-top-btn:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 8px 28px rgba(4, 120, 87, 0.4);
}

/* ============================================
   DECORATIVE ELEMENTS
   ============================================ */
/* Gold accent divider */
.divider-gold {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border: none;
  border-radius: 2px;
}

/* Emerald blob decoration */
.blob-emerald {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(4,120,87,0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Section with side accent bar */
.section-accent-left {
  border-left: 4px solid var(--emerald);
  padding-left: 32px;
}

/* Image placeholder */
.img-placeholder {
  background: linear-gradient(135deg, var(--emerald-dim), var(--emerald-faint));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--emerald);
  font-size: 0.85rem;
  font-weight: 500;
  min-height: 160px;
}

/* ============================================
   FADE-IN ON SCROLL
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   MAP PLACEHOLDER
   ============================================ */
.map-placeholder {
  width: 100%;
  height: 280px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-faint);
  font-size: 0.9rem;
  border: 1px solid var(--border);
  margin-top: 44px;
}

/* ============================================
   DATASHEET — Product Detail Pages
   ============================================ */
.datasheet { padding: 120px 0 60px; }
.datasheet-inner {
  width: 100%; max-width: 1000px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  box-shadow: var(--shadow-sm);
}
.ds-header {
  border-bottom: 2px solid var(--border);
  padding-bottom: 18px;
  margin-bottom: 26px;
}
.ds-tagline {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: linear-gradient(135deg, var(--emerald), var(--emerald-dark));
  padding: 8px 24px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}
.ds-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  margin-bottom: 10px;
}
.ds-breadcrumb a { color: var(--text-muted); }
.ds-breadcrumb a:hover { color: var(--emerald); }
.ds-header h1 {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-primary);
}
.ds-subtitle { color: var(--emerald); font-weight: 500; font-size: 1.35rem; }
.ds-body {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: end;
}
.ds-left { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.ds-text { font-size: 1.02rem; line-height: 1.85; color: var(--text-body); }
.ds-text p { margin-bottom: 16px; text-indent: 2em; }
.ds-text p:last-child { margin-bottom: 0; }
.ds-text b { color: var(--text-primary); font-weight: 600; }
.ds-figure-side {
  margin: 0; width: 220px; padding: 6px;
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  align-self: end;
}
.ds-figure-side img { width: 100%; border-radius: var(--radius-sm); display: block; }
.ds-figure-side figcaption {
  font-family: var(--font-mono);
  font-size: 0.68rem; color: var(--text-faint);
  text-align: center; margin-top: 5px;
  letter-spacing: 0.04em;
}
.ds-figures-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ds-fig-bottom {
  margin: 0; padding: 8px;
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.ds-fig-bottom img { width: 100%; border-radius: var(--radius-sm); display: block; }
.ds-fig-bottom figcaption {
  font-family: var(--font-mono);
  font-size: 0.7rem; color: var(--text-faint);
  text-align: center; margin-top: 6px;
  letter-spacing: 0.04em;
}
.ds-contact {
  margin-top: 28px; padding: 18px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-size: 0.83rem; color: var(--text-muted);
  line-height: 1.8;
}
.ds-signature { text-align: right; padding-top: 20px; }
.ds-signature h3 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 2px; }
.ds-signature p {
  font-family: var(--font-mono);
  font-size: 0.7rem; color: var(--text-faint);
  letter-spacing: 0.06em;
}

/* ============================================
   CLASSIFY PAGE
   ============================================ */
.classify-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.classify-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 1px solid var(--border-card);
  text-align: center;
  transition: all var(--duration) var(--ease-out);
}
.classify-card:hover { transform: translateY(-3px); border-color: var(--border-emerald); box-shadow: var(--shadow-card); }
.classify-card .classify-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--emerald);
}
.classify-card h3 { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 6px; }
.classify-card p { font-size: 0.82rem; color: var(--text-muted); }

/* ============================================
   ALTERNATING LAYOUT BLOCKS
   ============================================ */
.layout-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.layout-split.reverse { direction: rtl; }
.layout-split.reverse > * { direction: ltr; }
.layout-split .split-visual {
  background: var(--emerald-dim);
  border-radius: var(--radius-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.layout-split .split-visual .placeholder-large {
  font-size: 6rem;
  color: var(--emerald);
  opacity: 0.2;
}
.layout-split .split-content h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  margin-bottom: 16px;
}
.layout-split .split-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.85;
  margin-bottom: 24px;
}
/* Stack spacing for multiple layout-split blocks */
.layout-split + .layout-split { margin-top: 80px; }
/* Series meta chip inside layout-split */
.series-meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--emerald);
  background: var(--emerald-dim);
  padding: 5px 12px;
  border-radius: 50px;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
/* Series visual — large numbered badge */
.series-visual {
  width: 100%;
  height: 100%;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.series-visual .sv-num {
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 700;
  color: var(--emerald);
  opacity: 0.1;
  line-height: 1;
}
.series-visual .sv-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--emerald);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(4,120,87,0.06);
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-emerald);
}

/* ============================================
   BANNER / CTA BAND
   ============================================ */
.cta-band {
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2));
  padding: 64px 0;
  text-align: center;
  color: #fff;
}
.cta-band h2 { font-family: var(--font-display); font-size: 2rem; color: #fff; margin-bottom: 12px; }
.cta-band p { color: var(--text-on-dark-muted); font-size: 1rem; margin-bottom: 28px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============================================
   QUICK-JUMP CATEGORY BAR
   ============================================ */
.quick-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.jump-chip {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 50px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
  text-decoration: none;
}
.jump-chip:hover {
  border-color: var(--emerald);
  color: var(--emerald);
  background: var(--emerald-faint);
  transform: translateY(-1px);
}
.jump-special {
  border-color: var(--border-gold);
  color: var(--gold);
  background: var(--gold-dim);
}
.jump-special:hover {
  border-color: var(--gold);
  color: #fff;
  background: var(--gold);
}

/* ============================================
   FEATURED INSTRUMENT — Hero Product Card
   ============================================ */
.featured-instrument {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-card) 0%, #f9faf7 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.featured-instrument::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 6px; height: 100%;
  background: linear-gradient(180deg, var(--emerald), var(--emerald-light), var(--emerald));
}
.fi-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 50px;
  background: var(--emerald-dim);
  color: var(--emerald);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
  text-transform: uppercase;
  margin-bottom: 16px;
  border: 1px solid var(--border-emerald);
}
.fi-body h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.fi-en {
  font-size: 0.85rem;
  color: var(--text-faint);
  font-style: italic;
  margin-bottom: 16px;
}
.fi-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 24px;
}
.fi-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.fi-emblem {
  width: 140px; height: 140px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--emerald-dim), rgba(4,120,87,0.15));
  border: 2px solid var(--border-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--emerald);
  position: relative;
  z-index: 1;
}
.fi-image {
  width: 180px;
  height: auto;
  position: relative;
  z-index: 2;
  border-radius: var(--radius);
  filter: drop-shadow(0 8px 24px rgba(4,120,87,0.15));
}
.fi-ring {
  position: absolute;
  width: 200px; height: 200px;
  border-radius: 50%;
  border: 1.5px dashed rgba(4,120,87,0.12);
  animation: fiSpin 20s linear infinite;
}
@keyframes fiSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============================================
   SERIES BLOCK — Section container for product series
   ============================================ */
.series-block {
  /* container for series content */
}
.series-block-head {
  margin-bottom: 36px;
}
.series-block-head h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.series-block-head p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 640px;
  margin-top: 12px;
}
.series-block-head .gold-line {
  margin: 16px 0;
}
.series-block-head .series-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--emerald);
  background: var(--emerald-dim);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  border: 1px solid var(--border-emerald);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 16px 28px;
    gap: 2px;
  }
  .nav-toggle { display: flex; }
  .nav-links a.lang-btn { margin-left: 0; margin-top: 8px; justify-content: center; }
  .content-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .hero-emblem { width: 240px; height: 240px; }
  .hero-emblem .em-stat { font-size: 3rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .stat-item:nth-child(3)::after { display: none; }
  .layout-split { grid-template-columns: 1fr; gap: 36px; }
  .layout-split.reverse { direction: ltr; }
  .news-item-featured { grid-template-columns: 1fr; }
  .ds-body { grid-template-columns: 1fr; }
  .ds-figure-side { width: auto; max-width: 400px; }
  .product-card-featured { grid-column: span 1; grid-template-columns: 1fr; }
  .featured-instrument { grid-template-columns: 1fr; padding: 32px; gap: 28px; }
  .fi-visual { order: -1; }
  .fi-emblem, .fi-image { width: 120px; height: auto; }
  .fi-ring { width: 150px; height: 150px; }
}

@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  .hero .hero-desc { font-size: 0.92rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .section { padding: 64px 0; }
  .section-title { font-size: 1.7rem; }
  .section-header { margin-bottom: 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .features-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item::after { display: none; }
  .stat-item:nth-child(odd)::after { display: block; }
  .stat-number { font-size: 2rem; }
  .page-header { padding: 120px 0 40px; }
  .page-header h1 { font-size: 2rem; }
  .contact-form { padding: 28px; }
  .download-item { flex-wrap: wrap; }
  .download-btn { margin-left: 0; }
  .news-item { grid-template-columns: 1fr; gap: 12px; }
  .news-date { display: flex; gap: 8px; align-items: center; justify-content: flex-start; }
  .news-arrow { display: none; }
  .faq-question { font-size: 0.86rem; padding: 16px 20px; }
  .faq-answer { padding: 0 20px; }
  .faq-item.active .faq-answer { padding: 0 20px 18px; }
  .downloads-grid { grid-template-columns: 1fr; }
  .download-cat-grid { grid-template-columns: 1fr; }
  .datasheet-inner { padding: 28px 20px; }
  .ds-header h1 { font-size: 1.3rem; }
  .ds-body { grid-template-columns: 1fr; }
  .ds-figures-row { grid-template-columns: 1fr; }
  .features-alt { grid-template-columns: 1fr; }
  .series-header { flex-direction: column; gap: 8px; }
  .news-detail-header h1 { font-size: 1.5rem; }
}