/* ==========================================================================
   SANGJANG CHEMICAL — HIGH-END B2B MANUFACTURING WEBSITE STYLESHEET
   Design Concept: Minimalist Industrial Luxury, Apple-inspired Glassmorphism
   Palette: Off-White (#F8F9FA), Pure White (#FFFFFF), Deep Navy (#111827),
            Cobalt Blue (#2563EB), Silver Gray (#E5E7EB)
   ========================================================================== */

:root {
  /* Core Palette */
  --bg-white: #FFFFFF;
  --bg-offwhite: #F8F9FA;
  --bg-subtle: #F1F5F9;
  --color-navy: #111827;
  --color-navy-soft: #1F2937;
  --color-charcoal: #0B0F19;
  --color-cobalt: #2563EB;
  --color-cobalt-dark: #1D4ED8;
  --color-cobalt-light: #EFF6FF;
  --color-cobalt-glow: rgba(37, 99, 235, 0.16);

  /* Text Colors */
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --text-muted: #6B7280;
  --text-light: #9CA3AF;

  /* Borders & Glassmorphism */
  --border-silver: #E5E7EB;
  --border-subtle: rgba(17, 24, 39, 0.07);
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.65);

  /* Shadows */
  --shadow-xs: 0 2px 8px rgba(17, 24, 39, 0.04);
  --shadow-sm: 0 8px 24px rgba(17, 24, 39, 0.05);
  --shadow-md: 0 18px 42px rgba(17, 24, 39, 0.08);
  --shadow-lg: 0 28px 64px rgba(17, 24, 39, 0.13);
  --shadow-cobalt: 0 14px 32px rgba(37, 99, 235, 0.25);

  /* Radii & Wide Layout Spacing */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 28px;
  --container-max: 1480px;
  --header-height: 76px;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   1. RESET & BASE TYPOGRAPHY
-------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-white);
  line-height: 1.65;
  letter-spacing: -0.02em;
  word-break: keep-all;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
  filter: contrast(1.03) saturate(1.03);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, opacity 0.25s ease, transform 0.16s cubic-bezier(0.22, 1, 0.36, 1);
  -webkit-tap-highlight-color: transparent;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: transform 0.16s cubic-bezier(0.22, 1, 0.36, 1), background-color 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, color 0.22s ease;
}

/* Remove ugly browser focus rectangle on touch/mouse click while keeping keyboard accessibility */
*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--color-cobalt);
  outline-offset: 2px;
}

/* Tactile Press Feedback (Apple-style spring compression on tap/click) */
button:active,
.btn:active,
.filter-btn:active,
.quick-chip-btn:active,
.lang-btn:active,
.hero-slide-tab:active,
.btn-product-inquiry:active,
.btn-spec-toggle:active,
.btn-map-link:active,
.btn-copy-addr:active,
.floating-call-btn:active,
.floating-quote-btn:active,
.floating-top-btn:active,
.mobile-menu-btn:active {
  transform: scale(0.96) !important;
}

.faq-question:active {
  transform: scale(0.992);
  background-color: rgba(37, 99, 235, 0.04);
}

.container {
  width: 92%;
  max-width: var(--container-max);
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   2. REUSABLE COMPONENTS & SECTION HEADERS
-------------------------------------------------------------------------- */
.section {
  padding: 96px 0 112px;
  position: relative;
}

.section-white {
  background-color: var(--bg-white);
}

.section-offwhite {
  background-color: var(--bg-offwhite);
  border-top: 1px solid var(--border-silver);
  border-bottom: 1px solid var(--border-silver);
}

.section-header {
  max-width: 840px;
  margin-bottom: 56px;
}

html[lang="en"] .section-header {
  max-width: 1080px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-cobalt);
  margin-bottom: 14px;
}

.section-eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background-color: var(--color-cobalt);
  display: inline-block;
}

.section-title {
  font-size: clamp(2.05rem, 3.3vw, 2.95rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.035em;
  color: var(--color-navy);
  margin-bottom: 18px;
  text-wrap: balance;
}

html[lang="en"] .section-title {
  font-size: clamp(1.9rem, 2.75vw, 2.55rem);
  letter-spacing: -0.03em;
}

.section-subtitle {
  font-size: 1.05rem;
  line-height: 1.72;
  color: var(--text-secondary);
  font-weight: 400;
  text-wrap: pretty;
}

html[lang="en"] .section-subtitle {
  max-width: 920px;
}

.subsection-title {
  font-size: clamp(1.5rem, 2.2vw, 1.95rem);
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.subsection-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  text-wrap: pretty;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 600;
  border-radius: 999px;
  transition: transform 0.18s cubic-bezier(0.22, 1, 0.36, 1), background-color 0.28s var(--ease-out-expo), box-shadow 0.28s var(--ease-out-expo), border-color 0.28s ease;
  white-space: nowrap;
  user-select: none;
  -webkit-user-select: none;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 0.98rem;
}

.btn-primary {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  color: #FFFFFF;
  box-shadow: var(--shadow-cobalt);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1D4ED8 0%, #1E40AF 100%);
  transform: translateY(-2px);
  box-shadow: 0 18px 38px rgba(37, 99, 235, 0.35);
}

.btn-primary:active {
  background: #1E40AF;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.42), inset 0 2px 6px rgba(0, 0, 0, 0.18);
}

.btn-glass {
  background: rgba(17, 24, 39, 0.45);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.36);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.65);
  transform: translateY(-2px);
}

.btn-glass:active {
  background: rgba(255, 255, 255, 0.28);
  border-color: rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.15);
}

.btn-block {
  width: 100%;
  padding: 16px 24px;
  border-radius: var(--radius-md);
}

/* Fade-in Up on Scroll Animation */
.reveal-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
  will-change: opacity, transform;
}

.reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   3. STICKY GLASSMORPHISM NAVIGATION (GNB)
-------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(229, 231, 235, 0.85);
  transition: all 0.3s ease;
}

.scroll-progress-bar {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, #2563EB 0%, #60A5FA 60%, #38BDF8 100%);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.55);
  z-index: 1002;
  transition: width 0.08s linear;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 24px rgba(17, 24, 39, 0.05);
}

.nav-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 36px;
  width: auto;
  filter: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 44px;
}

.nav-link {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--color-navy-soft);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: var(--color-cobalt);
  transition: width 0.3s var(--ease-out-expo);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-cobalt);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border-radius: 999px;
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
}

.lang-btn {
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.lang-btn:hover {
  color: var(--color-navy);
}

.lang-btn.active {
  background: var(--color-navy);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(17, 24, 39, 0.15);
}

.btn-nav {
  padding: 11px 24px;
  font-size: 0.92rem;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-navy);
  transition: 0.3s ease;
}

/* --------------------------------------------------------------------------
   4. HERO SECTION (High-Clarity Visuals & Ultra-Minimal Editorial Bar)
-------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  /* Fit Hero + 48px Bottom Marquee Ticker together inside 100vh first screen */
  min-height: calc(100vh - 48px);
  padding: calc(var(--header-height) + 44px) 0 36px;
  display: flex;
  align-items: stretch;
  color: #FFFFFF;
  overflow: hidden;
  background-color: var(--color-charcoal);
}

.hero-bg-wrapper {
  position: absolute;
  inset: -16px;
  z-index: 0;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.35s ease-in-out;
  will-change: opacity;
}

.hero-slide.active {
  opacity: 1;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transform: scale(1.08) translate3d(0.6%, 0.4%, 0);
  /* Clear, bright, vivid background visibility */
  filter: contrast(1.05) brightness(0.93);
  transition: transform 7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

/* Ensure factory building bottom is never cut off in hero */
.hero-bg-factory {
  object-position: center 78%;
}

.hero-slide.active .hero-bg-img {
  transform: scale(1.01) translate3d(-0.6%, -0.3%, 0);
}

/* Soft asymmetric gradient so left typography is crisp while right background photo shines clearly */
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(98deg, rgba(11, 15, 25, 0.85) 0%, rgba(17, 24, 39, 0.58) 44%, rgba(17, 24, 39, 0.14) 100%),
    linear-gradient(180deg, rgba(11, 15, 25, 0.28) 0%, transparent 40%, rgba(11, 15, 25, 0.78) 100%);
}

.hero-container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 36px;
}

.hero-content {
  max-width: 860px;
  margin-top: auto;
  margin-bottom: auto;
}

.hero-badge-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #DBEAFE;
  background: rgba(37, 99, 235, 0.36);
  border: 1px solid rgba(147, 197, 253, 0.48);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

/* Live Pulse Dot Indicator */
.live-pulse-dot {
  position: relative;
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #60A5FA;
  box-shadow: 0 0 8px #60A5FA;
  flex-shrink: 0;
}

.live-pulse-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px solid #93C5FD;
  animation: livePulseRing 2.2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

@keyframes livePulseRing {
  0% {
    transform: scale(0.6);
    opacity: 0.95;
  }
  100% {
    transform: scale(2.1);
    opacity: 0;
  }
}

.hero-badge-sub {
  display: inline-block;
  padding: 7px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(17, 24, 39, 0.48);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(2.5rem, 4.4vw, 4.05rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
  text-shadow: 0 6px 28px rgba(0, 0, 0, 0.42);
}

html[lang="en"] .hero-title {
  font-size: clamp(2.2rem, 3.6vw, 3.45rem);
}

/* Pure Trendy Blue Spectrum Animated Text (No white, no underline, no shadow bleed) */
.text-gradient {
  display: inline-block;
  text-shadow: none;
  background: linear-gradient(110deg, #3B82F6 0%, #60A5FA 28%, #38BDF8 55%, #2563EB 82%, #60A5FA 100%);
  background-size: 240% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 6px 22px rgba(11, 15, 25, 0.6));
  animation: luminousTextFlow 6s ease-in-out infinite;
}

@keyframes luminousTextFlow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.hero-description {
  font-size: 1.1rem;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.9);
  max-width: 650px;
  margin-bottom: 36px;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
}

.hero-description strong {
  color: #FFFFFF;
  font-weight: 700;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* Ultra-Minimal Editorial Slide Indicator Bar at Bottom */
.hero-minimal-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-minimal-caption {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 14px;
  min-width: 0;
  flex: 1;
  overflow: hidden;
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.hero-minimal-caption.is-switching {
  opacity: 0.25;
  transform: translateY(4px);
}

.minimal-counter {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #93C5FD;
  flex-shrink: 0;
}

.minimal-divider {
  width: 18px;
  height: 1px;
  background: rgba(255, 255, 255, 0.35);
  flex-shrink: 0;
}

.minimal-slide-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: #FFFFFF;
  white-space: nowrap;
  flex-shrink: 0;
}

.minimal-slide-desc {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.72);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hero-minimal-tabs {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.hero-slide-tab {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 112px;
  text-align: left;
  color: rgba(255, 255, 255, 0.52);
  transition: color 0.25s ease;
}

.hero-slide-tab:hover,
.hero-slide-tab.active {
  color: #FFFFFF;
}

.minimal-tab-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.minimal-tab-line {
  position: relative;
  display: block;
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.22);
  overflow: hidden;
}

.tab-progress {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: #60A5FA;
}

.hero-slide-tab.active .tab-progress {
  animation: slideProgress 6s linear forwards;
}

@keyframes slideProgress {
  from { width: 0%; }
  to { width: 100%; }
}

/* --------------------------------------------------------------------------
   4-B. INFINITE TECHNICAL CAPABILITY MARQUEE TICKER BAND
-------------------------------------------------------------------------- */
.tech-marquee-band {
  position: relative;
  height: 48px;
  display: flex;
  align-items: center;
  background: #0B0F19;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  user-select: none;
}

.tech-marquee-track {
  display: flex;
  width: max-content;
  animation: marqueeInfiniteScroll 38s linear infinite;
}

.tech-marquee-band:hover .tech-marquee-track {
  animation-play-state: paused;
}

.tech-marquee-group {
  display: flex;
  align-items: center;
  gap: 28px;
  padding-right: 28px;
}

.marquee-item {
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.68);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.marquee-item strong {
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #93C5FD;
  margin-right: 6px;
}

.marquee-sep {
  font-size: 0.68rem;
  color: rgba(96, 165, 250, 0.45);
}

@keyframes marqueeInfiniteScroll {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

/* --------------------------------------------------------------------------
   5. COMPANY OVERVIEW & KEY METRICS
-------------------------------------------------------------------------- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.metric-card {
  position: relative;
  overflow: hidden;
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  transition: all 0.35s var(--ease-out-expo);
}

.metric-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    360px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(37, 99, 235, 0.08),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.metric-card:hover::before {
  opacity: 1;
}

.metric-card:hover {
  transform: translateY(-6px);
  background: var(--bg-white);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.35);
}

.metric-card-accent {
  background: linear-gradient(145deg, #111827 0%, #1E293B 100%);
  color: #FFFFFF;
  border-color: #1F2937;
}

.metric-card-accent::before {
  background: radial-gradient(
    360px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(96, 165, 250, 0.16),
    transparent 70%
  );
}

.metric-card-accent:hover {
  background: linear-gradient(145deg, #0F172A 0%, #1E3A8A 100%);
  color: #FFFFFF;
}

.metric-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.metric-category {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-cobalt);
}

.metric-card-accent .metric-category {
  color: #93C5FD;
}

.metric-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.metric-card-accent .metric-icon {
  background: rgba(255, 255, 255, 0.12);
  color: #93C5FD;
}

.metric-number-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 12px;
}

.metric-number {
  font-size: clamp(2.3rem, 3.2vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.metric-unit {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-cobalt);
}

.metric-card-accent .metric-unit {
  color: #93C5FD;
}

.metric-label {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.metric-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.metric-card-accent .metric-desc {
  color: rgba(255, 255, 255, 0.75);
}

/* CEO Message & Corporate Profile Split (Perfectly Balanced Height & Factory Cropping Fixed) */
.ceo-profile-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 32px;
  margin-bottom: 80px;
  align-items: stretch;
}

.ceo-card,
.corp-info-card {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.ceo-photo-banner {
  position: relative;
  height: 280px;
  overflow: hidden;
  flex-shrink: 0;
}

.ceo-photo-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Keep bottom of building & entrance fully visible */
  object-position: center 80%;
  transition: transform 0.6s var(--ease-out-expo);
}

.ceo-card:hover .ceo-photo-banner img {
  transform: scale(1.04);
}

.ceo-photo-badge {
  position: absolute;
  left: 20px;
  bottom: 16px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: rgba(17, 24, 39, 0.78);
  backdrop-filter: blur(10px);
  color: #FFFFFF;
}

.ceo-photo-badge span {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: #93C5FD;
}

.ceo-photo-badge strong {
  font-size: 0.88rem;
}

.ceo-text-content {
  padding: 36px 38px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.ceo-quote-mark {
  display: block;
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 16px;
  line-height: 1.4;
}

.ceo-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.75;
}

.ceo-body strong {
  color: var(--color-cobalt);
}

.ceo-promises-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 22px;
}

.ceo-promise-item {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.ceo-promise-item strong {
  display: block;
  font-size: 0.84rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 3px;
}

.ceo-promise-item span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.ceo-sign-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--border-silver);
}

.ceo-role {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.ceo-name {
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--color-navy);
}

.ceo-signature-img {
  height: 54px;
  width: auto;
  opacity: 0.9;
}

/* Corporate Info Fact List */
.corp-info-card {
  padding: 38px;
  justify-content: space-between;
}

.corp-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-navy);
  margin-bottom: 20px;
}

.corp-info-header h3 {
  font-size: 1.35rem;
  font-weight: 800;
}

.en-sub {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 8px;
  letter-spacing: 0.08em;
}

.venture-pill {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.corp-fact-list {
  display: flex;
  flex-direction: column;
}

.fact-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border-silver);
  font-size: 0.93rem;
}

.fact-item dt {
  font-weight: 700;
  color: var(--text-secondary);
}

.fact-item dd {
  font-weight: 500;
  color: var(--color-navy);
}

.org-mini-box {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-offwhite);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-silver);
}

.org-mini-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.88rem;
}

.org-mini-title span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.org-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.org-badge {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  color: var(--text-secondary);
}

.org-badge.highlight {
  background: var(--color-cobalt-light);
  border-color: rgba(37, 99, 235, 0.28);
  color: var(--color-cobalt);
}

/* 4 Core Strengths Grid */
.strengths-section {
  margin-bottom: 80px;
}

.strengths-header {
  margin-bottom: 32px;
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.strength-card {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.35s var(--ease-out-expo);
}

.strength-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-cobalt);
}

.strength-num {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--color-cobalt);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  display: inline-block;
}

.strength-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 14px;
  line-height: 1.35;
  text-wrap: balance;
}

html[lang="en"] .strength-title {
  font-size: 1.06rem;
  min-height: 2.7em;
}

.strength-text {
  font-size: 0.91rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  text-wrap: pretty;
}

.strength-tag {
  align-self: flex-start;
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  background: var(--bg-offwhite);
  color: var(--color-navy);
  border: 1px solid var(--border-silver);
}

/* Corporate History Timeline */
.history-wrapper {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-xl);
  padding: 48px 44px;
}

.history-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 36px;
}

.history-header > div {
  flex-shrink: 0;
}

.history-header .subsection-title {
  margin-bottom: 0;
  white-space: nowrap;
}

.history-header .subsection-desc {
  max-width: 680px;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.timeline-item {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 24px 22px;
  position: relative;
  transition: all 0.3s ease;
}

.timeline-item:hover {
  border-color: var(--color-cobalt);
  box-shadow: var(--shadow-sm);
}

.timeline-item-current {
  border: 2px solid var(--color-cobalt);
  background: linear-gradient(180deg, #FFFFFF 0%, #EFF6FF 100%);
}

.timeline-date {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-cobalt);
  margin-bottom: 8px;
}

.timeline-event {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 8px;
  line-height: 1.35;
}

html[lang="en"] .timeline-event {
  font-size: 0.94rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.timeline-detail {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.55;
  text-wrap: pretty;
}

/* --------------------------------------------------------------------------
   6. PRODUCTS CATALOG (주력 제품 카탈로그)
-------------------------------------------------------------------------- */
.product-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  background: var(--bg-white);
  color: var(--text-secondary);
  border: 1px solid var(--border-silver);
  transition: all 0.25s ease;
}

.filter-btn:hover {
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.filter-btn.active {
  background: var(--color-navy);
  color: #FFFFFF;
  border-color: var(--color-navy);
  box-shadow: var(--shadow-xs);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition: all 0.4s var(--ease-out-expo);
}

.product-card.is-hidden {
  display: none;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.35);
}

.product-visual {
  position: relative;
  height: 310px;
  overflow: hidden;
  background: #F1F5F9;
}

.product-main-img,
.product-fade-prev {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: zoom-in;
  transition: transform 0.75s var(--ease-out-expo), opacity 0.85s ease;
}

.product-fade-prev {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 1;
}

.product-fade-prev.fade-out {
  opacity: 0;
}

.product-main-img.is-changing {
  opacity: 1;
}

.product-visual:hover .product-main-img,
.product-visual:hover .product-fade-prev {
  transform: scale(1.06);
}

.product-index {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(17, 24, 39, 0.78);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  transition: opacity 0.22s ease;
}

.product-patent-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-cobalt);
  border: 1px solid rgba(37, 99, 235, 0.25);
  box-shadow: var(--shadow-xs);
  transition: opacity 0.22s ease;
}

/* Specification Overlay — Triggered cleanly via .spec-open toggle button */
.product-spec-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(180deg, rgba(11, 15, 25, 0.92) 0%, rgba(17, 24, 39, 0.98) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #FFFFFF;
  padding: 22px 22px 48px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.28s var(--ease-out-expo), transform 0.28s var(--ease-out-expo);
}

.spec-overlay-inner {
  width: 100%;
  display: flex;
  flex-direction: column;
}

.spec-overlay-tag {
  display: none;
}

.spec-overlay-inner h4 {
  font-size: 0.98rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
  padding-bottom: 9px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  letter-spacing: -0.02em;
}

.spec-overlay-inner h4::after {
  content: "SPEC";
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #60A5FA;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.22);
  border: 1px solid rgba(96, 165, 250, 0.35);
}

.spec-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 0;
}

.spec-list li {
  font-size: 0.8rem;
  line-height: 1.48;
  color: rgba(255, 255, 255, 0.9);
  word-break: keep-all;
}

.spec-list li strong {
  color: #93C5FD;
}

.product-body {
  padding: 26px 28px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-thumbs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.prod-thumb {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--border-silver);
  padding: 0;
  opacity: 0.7;
  transition: all 0.2s ease;
}

.prod-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.prod-thumb.active,
.prod-thumb:hover {
  border-color: var(--color-cobalt);
  opacity: 1;
  transform: translateY(-2px);
}

.product-cat {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-cobalt);
  margin-bottom: 4px;
}

.product-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 12px;
}

.product-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.68;
  margin-bottom: 18px;
  flex: 1;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.product-tags span {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-offwhite);
  color: var(--text-secondary);
}

.product-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-silver);
}

.btn-product-inquiry {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-navy);
}

.btn-product-inquiry:hover {
  color: var(--color-cobalt);
}

/* Special R&D Spotlight Card */
.product-card-spotlight {
  background: linear-gradient(155deg, #111827 0%, #1E293B 100%);
  color: #FFFFFF;
  border-color: #1F2937;
}

.spotlight-inner {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.spotlight-badge {
  display: inline-block;
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  background: rgba(37, 99, 235, 0.28);
  color: #93C5FD;
  border: 1px solid rgba(96, 165, 250, 0.35);
  margin-bottom: 16px;
}

.spotlight-title {
  font-size: 1.38rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 12px;
}

.spotlight-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.65;
  margin-bottom: 20px;
}

.comparison-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 22px;
}

.comp-imgs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
}

.comp-img-item {
  cursor: pointer;
  text-align: center;
}

.comp-img-item img {
  width: 100%;
  height: 110px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.comp-img-item span {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.8);
}

.spotlight-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.88);
}

.spotlight-points strong {
  color: #93C5FD;
}

/* --------------------------------------------------------------------------
   7. TECHNOLOGY & CERTIFICATIONS (생산 설비 및 인증 현황)
-------------------------------------------------------------------------- */
.process-box {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-xl);
  padding: 40px;
  margin-bottom: 48px;
}

.process-box-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
}

.process-box-header h3 {
  font-size: 1.3rem;
  font-weight: 800;
}

.process-box-header > span {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
}

.process-step {
  position: relative;
  overflow: hidden;
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  transition: all 0.35s var(--ease-out-expo);
}

.process-step.active {
  border-color: rgba(37, 99, 235, 0.45);
  background: linear-gradient(180deg, #FFFFFF 0%, #EFF6FF 100%);
  box-shadow: var(--shadow-xs);
}

.process-step:hover {
  transform: translateY(-5px);
  border-color: var(--color-cobalt);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.12);
}

.step-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 14px;
}

.step-num {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-cobalt);
}

.step-icon-box {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.process-step.active .step-icon-box,
.process-step:hover .step-icon-box {
  background: var(--color-cobalt);
  border-color: var(--color-cobalt);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.step-name {
  display: block;
  font-size: 0.94rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 6px;
  line-height: 1.3;
}

.step-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* Facility Photo Cards */
.facility-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 48px;
}

.facility-card {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s var(--ease-out-expo);
}

.facility-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.facility-img-wrap {
  position: relative;
  height: 250px;
  overflow: hidden;
  cursor: pointer;
}

.facility-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out-expo);
}

.facility-card:hover .facility-img-wrap img {
  transform: scale(1.06);
}

.facility-status-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 0.73rem;
  font-weight: 700;
  background: rgba(11, 15, 25, 0.84);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.facility-status-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34D399;
  box-shadow: 0 0 6px #34D399;
}

.facility-info {
  padding: 26px 28px;
}

.facility-code {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-cobalt);
  margin-bottom: 4px;
}

.facility-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 10px;
}

.facility-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Minimalist Spec Table */
.equipment-table-wrap {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-xs);
}

.table-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.table-title-row h3 {
  font-size: 1.3rem;
  font-weight: 800;
}

.table-title-row p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.capacity-pill {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.86rem;
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.table-responsive {
  overflow-x: auto;
}

.minimal-spec-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.minimal-spec-table thead th {
  padding: 16px 18px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--color-navy);
  background: var(--bg-offwhite);
}

.minimal-spec-table tbody td {
  padding: 18px;
  border-bottom: 1px solid var(--border-silver);
  color: var(--text-secondary);
}

.minimal-spec-table tbody tr:hover {
  background: var(--bg-offwhite);
}

.tbl-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  background: var(--color-navy);
  color: #FFFFFF;
}

.tbl-badge-future {
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.status-done {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: #059669;
  font-size: 0.85rem;
}

.status-done::before {
  content: "●";
  font-size: 0.65rem;
}

.status-plan {
  font-weight: 700;
  color: var(--color-cobalt);
  font-size: 0.85rem;
}

/* Certifications Grid */
.click-hint {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-cobalt);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}

.cert-card {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 18px;
  cursor: pointer;
  transition: all 0.35s var(--ease-out-expo);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cert-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-cobalt);
  box-shadow: var(--shadow-md);
}

.cert-img-box {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: 10px;
  padding: 10px;
  aspect-ratio: 1 / 1.38;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 14px;
}

.cert-img-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}

.cert-card:hover .cert-img-box img {
  transform: scale(1.04);
}

.cert-type {
  display: block;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--color-cobalt);
  margin-bottom: 4px;
}

.cert-name {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 4px;
  line-height: 1.35;
}

.cert-issuer {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   8. INQUIRY SECTION (ROW 1: 2-COL CONTACT & PLANT / ROW 2: FULL-WIDTH FORM)
-------------------------------------------------------------------------- */
.inquiry-top-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: stretch;
  margin-bottom: 32px;
}

/* Row 1 Left: Direct B2B Desk with Clean SVG Icons */
.contact-direct-box {
  background: linear-gradient(145deg, #111827 0%, #1E293B 100%);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 40px 38px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
}

.direct-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #60A5FA;
  margin-bottom: 8px;
}

.contact-direct-box h3 {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.direct-sub {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 28px;
}

.contact-channel-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.channel-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-align: left;
  transition: all 0.25s ease;
}

.channel-item:hover {
  background: rgba(37, 99, 235, 0.22);
  border-color: rgba(96, 165, 250, 0.55);
  transform: translateX(4px);
}

.channel-svg-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.24);
  border: 1px solid rgba(96, 165, 250, 0.35);
  color: #93C5FD;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.channel-text {
  flex: 1;
}

.channel-label {
  display: block;
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 2px;
}

.channel-val {
  font-size: 1.08rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.01em;
}

.channel-action {
  flex-shrink: 0;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #93C5FD;
}

/* Row 1 Right: Plant Locations Box */
.plant-locations-box {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-xl);
  padding: 40px 38px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.plant-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-cobalt);
  margin-bottom: 8px;
}

.plant-box-head h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 20px;
}

.plant-head-sub {
  font-weight: 700;
}

.location-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.location-item {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.loc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.loc-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.loc-tag {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  background: var(--bg-offwhite);
  color: var(--text-secondary);
}

.loc-tag-hq {
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.btn-copy-addr,
.btn-map {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  line-height: 1;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0 10px;
  border-radius: 6px;
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  color: var(--color-navy);
  white-space: nowrap;
  transition: all 0.2s ease;
}

.btn-copy-addr:hover,
.btn-map:hover {
  border-color: var(--color-cobalt);
  color: var(--color-cobalt);
  background: var(--color-cobalt-light);
}

.loc-addr {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 2px;
}

.loc-note {
  font-size: 0.81rem;
  color: var(--text-muted);
}

/* Row 2: Full-Width Online Quote Form Card */
.inquiry-form-card {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-xl);
  padding: 48px 46px;
  box-shadow: var(--shadow-md);
}

.form-card-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-silver);
}

.form-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-cobalt);
  margin-bottom: 6px;
}

.form-card-head h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-navy);
}

.form-card-head p {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.req {
  color: var(--color-cobalt);
  font-weight: 700;
}

.minimal-form {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.form-row-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

/* Underline-focused Minimal Input Field Style */
.input-group {
  position: relative;
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.input-group input,
.input-group textarea {
  width: 100%;
  padding: 12px 2px;
  font-size: 0.96rem;
  color: var(--color-navy);
  background: transparent;
  border: none;
  border-bottom: 1.5px solid #D1D5DB;
  border-radius: 0;
  outline: none;
  transition: border-color 0.25s ease;
}

.input-group input::placeholder,
.input-group textarea::placeholder {
  color: #9CA3AF;
}

.input-group textarea {
  resize: vertical;
  min-height: 88px;
}

.input-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-cobalt);
  transition: width 0.35s var(--ease-out-expo);
  pointer-events: none;
}

.input-group input:focus ~ .input-line,
.input-group textarea:focus ~ .input-line,
.custom-select-group.open .input-line {
  width: 100%;
}

/* Custom Dropdown UI (Replaces Native OS Select) */
.custom-select-group {
  position: relative;
}

.custom-select-trigger {
  width: 100%;
  padding: 12px 2px;
  font-size: 0.96rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1.5px solid #D1D5DB;
  text-align: left;
  color: var(--color-navy);
}

.custom-select-text.is-placeholder {
  color: #9CA3AF;
}

.custom-select-arrow {
  color: var(--text-muted);
  transition: transform 0.3s var(--ease-out-expo);
  flex-shrink: 0;
}

.custom-select-group.open .custom-select-arrow {
  transform: rotate(180deg);
  color: var(--color-cobalt);
}

.custom-select-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 48px rgba(17, 24, 39, 0.14);
  padding: 8px;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: all 0.25s var(--ease-out-expo);
}

.custom-select-group.open .custom-select-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.custom-select-option {
  padding: 11px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.custom-select-option strong {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-navy);
}

.custom-select-option span {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.custom-select-option:hover,
.custom-select-option.selected {
  background: var(--color-cobalt-light);
}

.custom-select-option:hover strong,
.custom-select-option.selected strong {
  color: var(--color-cobalt);
}

.form-submit-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 8px;
}

.privacy-consent-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.privacy-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.privacy-checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.custom-checkbox {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1.5px solid #D1D5DB;
  background: var(--bg-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.custom-checkbox::after {
  content: "";
  width: 5px;
  height: 9px;
  border: solid #FFFFFF;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  margin-top: -2px;
  transition: transform 0.2s ease;
}

.privacy-checkbox-label input[type="checkbox"]:checked + .custom-checkbox {
  background: var(--color-cobalt);
  border-color: var(--color-cobalt);
}

.privacy-checkbox-label input[type="checkbox"]:checked + .custom-checkbox::after {
  transform: rotate(45deg) scale(1);
}

.consent-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-navy);
}

.btn-legal-inline {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-cobalt);
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 2px 4px;
}

.btn-legal-inline:hover {
  color: var(--color-cobalt-dark);
}

.btn-submit {
  padding: 17px 38px;
  font-size: 1rem;
  border-radius: 999px;
}

/* --------------------------------------------------------------------------
   9. FOOTER (다크 차콜 배경)
-------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-charcoal);
  color: rgba(255, 255, 255, 0.75);
  padding: 76px 0 52px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  gap: 48px;
  margin-bottom: 44px;
}

.footer-logo {
  height: 38px;
  width: auto;
  margin-bottom: 14px;
  filter: none;
}

.footer-slogan {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #60A5FA;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.65;
}

.footer-links-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.footer-col h4 {
  font-size: 0.92rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.62);
}

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin-bottom: 22px;
}

.footer-legal-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-legal-btn {
  font-size: 0.84rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.68);
  padding: 0;
  transition: color 0.2s ease;
}

.footer-legal-btn.is-strong {
  font-weight: 800;
  color: #93C5FD;
}

.footer-legal-btn:hover {
  color: #FFFFFF;
}

.footer-legal-bar .sep {
  color: rgba(255, 255, 255, 0.22);
  font-size: 0.78rem;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.biz-legal-info {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.56);
  line-height: 1.85;
}

.biz-legal-info strong {
  color: rgba(255, 255, 255, 0.82);
}

.biz-legal-info .sep {
  margin: 0 8px;
  opacity: 0.3;
}

.copyright {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.42);
  cursor: pointer;
  user-select: none;
  display: inline-block;
  transition: color 0.2s ease;
}

.copyright:hover {
  color: rgba(255, 255, 255, 0.58);
}

/* --------------------------------------------------------------------------
   10. LIGHTBOX MODAL, CUSTOM QUOTE MODAL, LEGAL MODAL & TOAST NOTIFICATION
-------------------------------------------------------------------------- */
.lightbox-modal,
.quote-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox-modal.open,
.quote-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-backdrop,
.quote-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 15, 25, 0.82);
  backdrop-filter: blur(12px);
}

.lightbox-content {
  position: relative;
  z-index: 2;
  max-width: min(920px, 92vw);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-close {
  position: absolute;
  top: -44px;
  right: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #FFFFFF;
  font-size: 1.1rem;
}

.lightbox-img {
  max-height: 78vh;
  width: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  background: #FFFFFF;
}

.lightbox-caption {
  margin-top: 14px;
  font-size: 0.94rem;
  font-weight: 600;
  color: #FFFFFF;
  text-align: center;
}

/* Custom Quote Submission & Legal Modal Card */
.quote-modal-card {
  position: relative;
  z-index: 2;
  width: min(580px, 92vw);
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: 40px 38px;
  box-shadow: 0 32px 72px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-silver);
}

.legal-modal-card {
  width: min(680px, 92vw);
}

/* Hidden Admin Login Modal Card (Apple Bright Glassmorphism) */
.admin-login-card {
  width: min(460px, 92vw);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: 0 32px 80px rgba(17, 24, 39, 0.28);
}

.admin-modal-badge {
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.admin-login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 18px;
}

.admin-field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.admin-field-group label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-navy);
}

.admin-field-group input {
  width: 100%;
  padding: 13px 16px;
  border-radius: 12px;
  border: 1.5px solid var(--border-silver);
  background: #F8FAFC;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-navy);
  outline: none;
  transition: all 0.2s ease;
}

.admin-field-group input:focus {
  background: #FFFFFF;
  border-color: var(--color-cobalt);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.admin-login-error {
  min-height: 18px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #DC2626;
  margin: -4px 0 2px;
}

.admin-login-actions {
  margin-top: 4px;
}

.legal-modal-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.legal-tab-btn {
  padding: 7px 15px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--bg-offwhite);
  color: var(--text-secondary);
  border: 1px solid var(--border-silver);
  transition: all 0.2s ease;
}

.legal-tab-btn.active,
.legal-tab-btn:hover {
  background: var(--color-navy);
  color: #FFFFFF;
  border-color: var(--color-navy);
}

.legal-modal-body {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  max-height: 360px;
  overflow-y: auto;
  margin-bottom: 22px;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--text-secondary);
}

.legal-modal-body h4 {
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--color-navy);
  margin: 16px 0 6px;
}

.legal-modal-body h4:first-child {
  margin-top: 0;
}

.legal-modal-body p,
.legal-modal-body ul {
  margin-bottom: 10px;
}

.legal-modal-body li {
  position: relative;
  padding-left: 12px;
  margin-bottom: 4px;
}

.legal-modal-body li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-cobalt);
}

.quote-modal-close {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-offwhite);
  color: var(--text-secondary);
  font-size: 1rem;
}

.quote-modal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: #ECFDF5;
  color: #059669;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.quote-modal-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.quote-modal-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 18px;
}

.quote-modal-preview {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  font-family: inherit;
  font-size: 0.84rem;
  color: var(--color-navy);
  line-height: 1.65;
  white-space: pre-wrap;
  max-height: 220px;
  overflow-y: auto;
  margin-bottom: 22px;
}

.quote-modal-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.quote-modal-actions .btn {
  padding: 13px 24px;
  font-size: 0.94rem;
}

.quote-modal-actions .btn-modal-full {
  width: 100%;
  justify-content: center;
}

.btn-modal-outline {
  border: 1px solid var(--border-silver);
  background: var(--bg-white);
  color: var(--color-navy);
}

.btn-modal-outline:hover {
  border-color: var(--color-cobalt);
  color: var(--color-cobalt);
}

.btn-modal-ghost {
  background: var(--bg-offwhite);
  color: var(--text-secondary);
}

/* Custom Toast Notification */
.toast-notification {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 2100;
  max-width: 440px;
  padding: 16px 22px;
  border-radius: var(--radius-md);
  background: rgba(17, 24, 39, 0.94);
  backdrop-filter: blur(14px);
  color: #FFFFFF;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-left: 4px solid var(--color-cobalt);
  transform: translateY(24px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s var(--ease-out-expo);
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   11. 5 PREMIUM B2B UI/UX ENHANCEMENTS & B2B PRACTICAL FAQ (2026 UPGRADE)
-------------------------------------------------------------------------- */

/* Accessibility Skip-to-Content Link */
.skip-to-content {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 3000;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--color-cobalt);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
  transition: top 0.25s ease;
}

.skip-to-content:focus {
  top: 14px;
}

/* Mobile-only drawer header, backdrop & CTA inside nav list (hidden on desktop) */
.mobile-drawer-head,
.mobile-nav-cta-item,
.mobile-nav-backdrop {
  display: none;
}

/* Subtle shake & highlight animation when a required form field is missing */
@keyframes inputErrorShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.input-error-shake {
  animation: inputErrorShake 0.38s ease;
}

.input-error-shake input,
.input-error-shake textarea,
.input-error-shake .custom-select-trigger {
  border-bottom-color: #EF4444 !important;
}

/* (1) Subtle Metallic Shimmer Micro-Interaction on Patent & Venture Badges */
@keyframes badgeShimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.product-patent-badge,
.venture-pill,
.film-layer-pill {
  background-image: linear-gradient(
    110deg,
    rgba(255, 255, 255, 0) 35%,
    rgba(37, 99, 235, 0.12) 50%,
    rgba(255, 255, 255, 0) 65%
  );
  background-size: 220% 100%;
  animation: badgeShimmer 6s infinite linear;
}

/* (2) Mobile/Touch & Click Specification Toggle Button (.btn-spec-toggle) & Slide Controls */
.btn-spec-toggle {
  position: absolute;
  bottom: 14px;
  right: 14px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 32px;
  padding: 0 13px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  color: #FFFFFF;
  background: rgba(17, 24, 39, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
  transition: all 0.22s var(--ease-out-expo);
}

.product-visual.spec-open .btn-spec-toggle {
  background: var(--color-cobalt);
  border-color: #60A5FA;
}

.btn-spec-toggle:active {
  transform: scale(0.94);
}

.product-visual.spec-open .product-index,
.product-visual.spec-open .product-patent-badge {
  opacity: 0;
  pointer-events: none;
}

.product-visual.spec-open .product-spec-overlay {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.product-visual.spec-open .product-main-img {
  transform: scale(1.06);
}

/* (3) 4-Layer Multi-Functional Film Cross-Section Infographic (.film-layer-architecture) */
.film-layer-architecture {
  margin-top: 52px;
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-xl);
  padding: 44px 42px;
  box-shadow: var(--shadow-md);
}

.film-layer-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 26px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-silver);
}

.film-layer-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--color-cobalt);
  margin-bottom: 6px;
}

.film-layer-title {
  font-size: 1.48rem;
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.film-layer-sub {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 760px;
}

.film-layer-pill {
  flex-shrink: 0;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--color-cobalt);
  background-color: var(--color-cobalt-light);
  border: 1px solid rgba(37, 99, 235, 0.24);
}

.film-layer-body {
  display: grid;
  grid-template-columns: 0.92fr 2.08fr;
  gap: 32px;
  align-items: stretch;
}

/* Left Visual Stacked Plates */
.film-stack-visual {
  background: linear-gradient(160deg, #0F172A 0%, #1E293B 100%);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.film-stack-plate {
  position: relative;
  padding: 15px 18px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-left: 4px solid #60A5FA;
  display: flex;
  flex-direction: column;
  gap: 3px;
  transition: all 0.28s var(--ease-out-expo);
  cursor: pointer;
}

.film-stack-plate[data-layer-idx="1"] {
  border-left-color: #93C5FD;
  background: rgba(148, 163, 184, 0.14);
}

.film-stack-plate[data-layer-idx="2"] {
  border-left-color: #38BDF8;
}

.film-stack-plate[data-layer-idx="3"] {
  border-left-color: #2563EB;
}

.film-stack-plate:hover,
.film-stack-plate.is-active {
  transform: translateX(8px);
  background: rgba(37, 99, 235, 0.28);
  border-color: #60A5FA;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
}

.plate-num {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #93C5FD;
}

.plate-mat {
  font-size: 0.94rem;
  font-weight: 800;
  color: #FFFFFF;
}

.plate-spec {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.65);
}

/* Right 4-Layer Cards Grid */
.film-layer-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.film-layer-item {
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  padding: 22px 22px;
  transition: all 0.28s var(--ease-out-expo);
  display: flex;
  flex-direction: column;
}

.film-layer-item:hover,
.film-layer-item.is-active {
  background: var(--bg-white);
  border-color: var(--color-cobalt);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.layer-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.layer-badge {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 800;
  background: rgba(17, 24, 39, 0.08);
  color: var(--color-navy);
}

.layer-badge-accent {
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.layer-material {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
}

.layer-name {
  font-size: 1.04rem;
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: 8px;
}

.layer-desc {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.62;
}

/* (4) One-Click Inquiry Type Quick-Select Chips (.inquiry-quick-chips) */
.inquiry-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.inquiry-label-row label {
  margin-bottom: 0;
}

.quick-chip-guide {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
}

.inquiry-quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.quick-chip-btn {
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  transition: all 0.2s ease;
}

.quick-chip-btn:hover {
  border-color: var(--color-cobalt);
  color: var(--color-cobalt);
  background: var(--color-cobalt-light);
}

.quick-chip-btn.active {
  background: var(--color-cobalt);
  color: #FFFFFF;
  border-color: var(--color-cobalt);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

/* (5) B2B Practical FAQ Accordion (.b2b-faq-card) */
.b2b-faq-card {
  margin-top: 32px;
  background: var(--bg-offwhite);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-xl);
  padding: 42px 44px;
}

.faq-card-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.faq-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--color-cobalt);
  margin-bottom: 6px;
}

.faq-title {
  font-size: 1.42rem;
  font-weight: 800;
  color: var(--color-navy);
}

.faq-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.faq-accordion-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-silver);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-item.open {
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
}

.faq-q-badge {
  flex-shrink: 0;
  padding: 4px 9px;
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 800;
  background: var(--color-cobalt-light);
  color: var(--color-cobalt);
}

.faq-q-text {
  flex: 1;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.45;
}

.faq-toggle-icon {
  position: relative;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-offwhite);
  color: var(--color-navy);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s ease, color 0.25s ease;
}

.faq-toggle-icon::before,
.faq-toggle-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: currentColor;
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform 0.28s var(--ease-out-expo), opacity 0.22s ease, background-color 0.25s ease;
}

.faq-toggle-icon::before {
  width: 12px;
  height: 2px;
}

.faq-toggle-icon::after {
  width: 2px;
  height: 12px;
}

/* Closed: '+' (plus) -> Opened: '−' (minus) */
.faq-item.open .faq-toggle-icon {
  background: var(--color-cobalt);
  color: #FFFFFF;
}

.faq-item.open .faq-toggle-icon::after {
  transform: translate(-50%, -50%) rotate(90deg) scaleY(0);
  opacity: 0;
}

.faq-answer {
  display: none;
  padding: 0 22px 20px 60px;
  font-size: 0.91rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-answer strong {
  color: var(--color-navy);
}

/* (6) Floating Quick Action & Scroll-to-Top Bar (.floating-quick-bar) */
.floating-quick-bar {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 1850;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.35s var(--ease-out-expo), transform 0.35s var(--ease-out-expo);
}

.floating-quick-bar.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.floating-call-btn,
.floating-quote-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
  transition: all 0.25s var(--ease-out-expo);
}

/* Hide direct phone call button on desktop web browsers; show only on mobile */
.floating-call-btn {
  display: none;
  background: rgba(17, 24, 39, 0.92);
  color: #FFFFFF;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 24px rgba(17, 24, 39, 0.24);
}

.floating-call-btn:hover {
  background: var(--color-navy);
  transform: translateY(-2px);
}

.floating-quote-btn {
  background: var(--color-cobalt);
  color: #FFFFFF;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.34);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.floating-quote-btn:hover {
  background: var(--color-cobalt-dark);
  transform: translateY(-2px);
}

.floating-top-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-silver);
  color: var(--color-navy);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  box-shadow: 0 10px 26px rgba(17, 24, 39, 0.14);
  transition: all 0.25s var(--ease-out-expo);
}

.floating-top-btn span {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  margin-top: -1px;
}

.floating-top-btn:hover,
.floating-top-btn:active,
.floating-top-btn.is-pressed {
  background: var(--color-navy);
  color: #FFFFFF;
  border-color: var(--color-navy);
  transform: translateY(-2px);
}

/* Keep Toast Notification cleanly positioned at top-center right below the header */
.toast-notification {
  top: calc(var(--header-height) + 14px);
  bottom: auto;
  left: 50%;
  right: auto;
  width: max-content;
  max-width: min(460px, calc(100vw - 32px));
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid rgba(96, 165, 250, 0.45);
  border-left: 1px solid rgba(96, 165, 250, 0.45);
  text-align: center;
  box-shadow: 0 16px 38px rgba(11, 15, 25, 0.28);
  transform: translate(-50%, -18px);
}

.toast-notification.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   12. RESPONSIVE DESIGN (TABLET & MOBILE — FULL OPTIMIZATION)
-------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .ceo-profile-grid,
  .inquiry-top-grid,
  .form-row-3col,
  .film-layer-body {
    grid-template-columns: 1fr;
  }

  .hero-minimal-bar,
  .film-layer-header,
  .faq-card-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .metrics-grid,
  .strengths-grid,
  .timeline-grid,
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .cert-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 64px;
  }

  .container {
    width: 92%;
  }

  .section {
    padding: 56px 0 68px;
  }

  .section-header {
    margin-bottom: 32px;
  }

  .section-eyebrow {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
  }

  .section-eyebrow::before {
    width: 18px;
  }

  .section-title,
  html[lang="en"] .section-title {
    font-size: clamp(1.42rem, 5.4vw, 1.92rem);
    line-height: 1.3;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
    word-break: keep-all;
    text-wrap: balance;
  }

  html[lang="en"] .section-title br,
  html[lang="en"] .hero-title br,
  .footer-desc br {
    display: none;
  }

  .section-subtitle {
    font-size: 0.9rem;
    line-height: 1.64;
    word-break: keep-all;
    text-wrap: pretty;
  }

  .subsection-title {
    font-size: 1.32rem;
    line-height: 1.3;
    word-break: keep-all;
    text-wrap: balance;
  }

  .subsection-desc {
    font-size: 0.88rem;
    line-height: 1.6;
  }

  /* Header & Mobile Drawer Optimization — True Shared Glassmorphism (Solve CSS Backdrop Root) */
  .site-header,
  .site-header.scrolled {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .site-header::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    transition: background 0.3s ease;
    pointer-events: none;
  }

  .site-header.scrolled::before {
    background: rgba(255, 255, 255, 0.94);
  }

  .nav-container {
    gap: 10px;
  }

  .logo-img {
    height: 28px;
  }

  .nav-actions {
    gap: 8px;
  }

  .nav-actions .btn-nav {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Mobile Navigation Drawer — Exact Same Glassmorphism Color/Blur Spec as Header + Bottom 24px R-value */
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    border-bottom: 1px solid rgba(229, 231, 235, 0.85);
    border-radius: 0 0 24px 24px;
    box-shadow: 0 20px 44px rgba(17, 24, 39, 0.14);
    padding: 6px 4% 20px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.35s var(--ease-out-expo);
    max-height: calc(100vh - var(--header-height));
    max-height: calc(100svh - var(--header-height));
    overflow-y: auto;
  }

  .site-header.scrolled .main-nav {
    background: rgba(255, 255, 255, 0.94);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 990;
    background: rgba(11, 15, 25, 0.42);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .mobile-nav-backdrop.open {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-drawer-head {
    display: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 2px;
    font-size: 0.96rem;
    font-weight: 700;
    color: var(--color-navy-soft);
    border-radius: 0;
    border: none;
    border-bottom: 1px solid rgba(229, 231, 235, 0.75);
    background: transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
  }

  .nav-link::before {
    display: none;
  }

  .nav-link::after {
    position: static;
    width: auto !important;
    height: auto;
    background: transparent;
    margin-left: auto;
    content: attr(data-nav-en) "  ›";
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    transition: color 0.2s ease;
  }

  .nav-link:hover,
  .nav-link.active {
    background: transparent;
    border-bottom-color: var(--color-cobalt);
    color: var(--color-cobalt);
  }

  .nav-link.active::after {
    color: var(--color-cobalt);
  }

  .mobile-nav-cta-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 14px;
    padding-top: 0;
    border-top: none;
  }

  .mobile-drawer-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .mobile-drawer-actions .btn {
    padding: 11px 10px;
    font-size: 0.78rem;
    font-weight: 800;
    border-radius: 999px;
    letter-spacing: -0.02em;
    white-space: nowrap;
  }

  .mobile-nav-pdf {
    background: var(--bg-offwhite);
    color: var(--color-navy);
    border: 1px solid var(--border-silver);
  }

  .mobile-drawer-contact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .drawer-contact-chip {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 12px;
    border-radius: 12px;
    background: var(--bg-offwhite);
    border: 1px solid var(--border-silver);
    min-width: 0;
  }

  .drawer-contact-chip .chip-label {
    font-size: 0.64rem;
    font-weight: 700;
    color: var(--text-muted);
  }

  .drawer-contact-chip strong {
    font-size: 0.74rem;
    font-weight: 800;
    color: var(--color-navy);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Hero Mobile Optimization — Exact 100% First-Screen Fill & High-Impact Main Title */
  .tech-marquee-band {
    height: 42px;
  }

  .hero-section {
    min-height: calc(100vh - 42px);
    min-height: calc(100svh - 42px);
    padding: calc(var(--header-height) + 22px) 0 20px;
  }

  .hero-bg-img {
    object-position: 60% center;
    filter: contrast(1.06) brightness(0.95);
  }

  .hero-bg-factory {
    object-position: center 72%;
  }

  /* Balanced dark gradient matching the desktop web browser so text is crisp and background photo is clean */
  .hero-overlay {
    background:
      linear-gradient(
        180deg,
        rgba(11, 15, 25, 0.48) 0%,
        rgba(11, 15, 25, 0.62) 50%,
        rgba(11, 15, 25, 0.9) 100%
      );
  }

  .hero-container {
    justify-content: space-between;
    gap: 20px;
  }

  .hero-content {
    margin-top: auto;
    margin-bottom: auto;
  }

  .hero-badge-group {
    gap: 6px;
    margin-bottom: 14px;
  }

  .hero-badge,
  .hero-badge-sub {
    display: inline-flex;
    align-items: center;
    font-size: 0.64rem;
    padding: 5px 11px;
    letter-spacing: 0.05em;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }

  .hero-title {
    font-size: clamp(2.02rem, 8vw, 2.55rem);
    font-weight: 800;
    line-height: 1.22;
    letter-spacing: -0.04em;
    margin-bottom: 14px;
    text-shadow: 0 4px 18px rgba(0, 0, 0, 0.72), 0 10px 32px rgba(0, 0, 0, 0.5);
  }

  html[lang="en"] .hero-title {
    font-size: clamp(1.75rem, 6.6vw, 2.2rem);
    line-height: 1.24;
  }

  .hero-title .text-gradient {
    background: linear-gradient(110deg, #60A5FA 0%, #93C5FD 32%, #38BDF8 65%, #60A5FA 100%);
    background-size: 220% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 4px 16px rgba(37, 99, 235, 0.55)) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.85));
  }

  .hero-description {
    font-size: 0.88rem;
    line-height: 1.62;
    margin-bottom: 22px;
    color: rgba(255, 255, 255, 0.92);
  }

  /* Keep the exact same Pill Button shape (border-radius: 999px) as the desktop web browser */
  .hero-cta-group {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .hero-cta-group .btn-lg {
    width: 100%;
    padding: 13px 20px;
    font-size: 0.88rem;
    font-weight: 700;
    border-radius: 999px;
  }

  /* Match desktop web browser's frameless top-border Editorial Slide Bar */
  .hero-minimal-bar {
    gap: 10px;
    padding: 14px 0 0;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 0;
  }

  .hero-minimal-caption {
    flex-wrap: wrap;
    white-space: normal;
    gap: 4px 8px;
    width: 100%;
  }

  .minimal-slide-title {
    font-size: 0.86rem;
  }

  .minimal-slide-desc {
    display: block;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.76rem;
    color: rgba(255, 255, 255, 0.75);
  }

  .hero-minimal-tabs {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }

  .hero-slide-tab {
    width: 100%;
    gap: 5px;
  }

  .minimal-tab-label {
    font-size: 0.68rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Overview, CEO & History Mobile Optimization */
  .metrics-grid {
    gap: 12px;
    margin-bottom: 36px;
  }

  .metric-card {
    padding: 22px 18px;
  }

  .metric-top {
    margin-bottom: 12px;
  }

  .metric-number {
    font-size: 2.15rem;
  }

  .metric-label {
    font-size: 0.95rem;
    line-height: 1.35;
  }

  .metric-desc {
    font-size: 0.84rem;
    line-height: 1.55;
  }

  .ceo-profile-grid {
    gap: 20px;
    margin-bottom: 48px;
  }

  .ceo-photo-banner {
    height: 215px;
  }

  .ceo-photo-badge {
    left: 12px;
    right: 12px;
    bottom: 12px;
    padding: 8px 12px;
  }

  .ceo-photo-badge strong {
    font-size: 0.78rem;
  }

  .ceo-text-content,
  .corp-info-card {
    padding: 24px 18px;
  }

  .ceo-quote-mark {
    font-size: 1.08rem;
    line-height: 1.42;
  }

  .ceo-body {
    font-size: 0.89rem;
    line-height: 1.68;
  }

  .corp-info-header {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px;
    padding-bottom: 14px;
    margin-bottom: 14px;
  }

  .corp-info-header h3 {
    font-size: 1.22rem;
    line-height: 1.25;
  }

  .corp-info-header .en-sub {
    display: block;
    margin-left: 0;
    margin-top: 2px;
    font-size: 0.68rem;
  }

  /* Clean 2-column table alignment on mobile for Corporate Profile */
  .fact-item {
    grid-template-columns: 108px 1fr;
    gap: 10px;
    padding: 10px 0;
    font-size: 0.85rem;
  }

  .fact-item dt {
    font-size: 0.82rem;
  }

  .fact-item dd {
    line-height: 1.5;
  }

  .org-mini-box {
    margin-top: 18px;
    padding: 16px;
  }

  .org-mini-title {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    margin-bottom: 10px;
  }

  .org-badges {
    gap: 6px;
  }

  .org-badge {
    display: inline-flex;
    align-items: center;
    height: 28px;
    padding: 0 10px;
    font-size: 0.75rem;
  }

  .ceo-promises-grid,
  .facility-cards-grid,
  .footer-top,
  .footer-links-group,
  .products-grid,
  .process-steps,
  .film-layer-cards {
    grid-template-columns: 1fr;
  }

  .strengths-section {
    margin-bottom: 48px;
  }

  .strengths-grid {
    gap: 14px;
  }

  .strength-card {
    padding: 22px 18px;
  }

  .strength-title {
    font-size: 1.06rem;
    margin-bottom: 10px;
  }

  html[lang="en"] .strength-title {
    min-height: 0;
  }

  .strength-text {
    font-size: 0.87rem;
    line-height: 1.62;
    margin-bottom: 16px;
  }

  .history-wrapper,
  .inquiry-form-card,
  .contact-direct-box,
  .plant-locations-box,
  .film-layer-architecture,
  .process-box,
  .equipment-table-wrap,
  .b2b-faq-card {
    padding: 24px 18px;
    border-radius: var(--radius-lg);
  }

  .history-header,
  .form-card-head,
  .form-submit-bar,
  .table-title-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .history-header > div {
    flex-shrink: 1;
    width: 100%;
  }

  .history-header .subsection-title {
    white-space: normal;
    font-size: 1.28rem;
  }

  .timeline-grid {
    gap: 12px;
  }

  .timeline-item {
    padding: 18px 18px;
  }

  html[lang="en"] .timeline-event {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
  }

  /* Products & Spec Overlay Mobile Optimization */
  .product-filter-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
    margin-bottom: 24px;
    gap: 8px;
    scrollbar-width: none;
  }

  .product-filter-bar::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex-shrink: 0;
    height: 36px;
    display: inline-flex;
    align-items: center;
    padding: 0 15px;
    font-size: 0.83rem;
  }

  .product-visual {
    height: 278px;
  }

  .product-spec-overlay {
    padding: 18px 16px 44px;
    overflow: hidden;
  }

  .spec-overlay-inner h4 {
    font-size: 0.92rem;
    margin-bottom: 10px;
    padding-bottom: 8px;
  }

  .spec-list {
    gap: 6px;
  }

  .spec-list li {
    font-size: 0.76rem;
    line-height: 1.44;
    letter-spacing: -0.02em;
  }

  .btn-spec-toggle {
    height: 30px;
    padding: 0 11px;
    font-size: 0.72rem;
    bottom: 12px;
    right: 15px;
  }

  .product-body,
  .spotlight-inner {
    padding: 20px 18px 22px;
  }

  .product-title {
    font-size: 1.22rem;
  }

  .product-desc {
    font-size: 0.88rem;
    line-height: 1.62;
  }

  .film-layer-header {
    padding-bottom: 18px;
    margin-bottom: 20px;
    gap: 12px;
  }

  .film-layer-title,
  .faq-title {
    font-size: 1.22rem;
    line-height: 1.32;
    word-break: keep-all;
    text-wrap: balance;
  }

  .film-layer-pill {
    font-size: 0.75rem;
    padding: 7px 13px;
  }

  .film-stack-visual {
    padding: 18px 14px;
    gap: 10px;
  }

  .film-layer-item {
    padding: 18px 16px;
  }

  /* 7-Step Process Mobile Optimization */
  .process-box-header {
    margin-bottom: 18px;
  }

  .process-box-header h3,
  .table-title-row h3 {
    font-size: 1.2rem;
  }

  .process-steps {
    gap: 10px;
  }

  .process-step {
    padding: 15px 16px;
  }

  .step-top {
    margin-bottom: 8px;
  }

  /* Equipment Spec Table Horizontal Swipe on Mobile */
  .minimal-spec-table {
    min-width: 640px;
    font-size: 0.84rem;
  }

  /* Certifications Grid Mobile Optimization */
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .cert-card {
    padding: 12px;
  }

  .cert-img-box {
    padding: 8px;
    margin-bottom: 10px;
  }

  .cert-type {
    font-size: 0.62rem;
  }

  .cert-name {
    font-size: 0.84rem;
    line-height: 1.32;
  }

  .cert-issuer {
    font-size: 0.71rem;
    line-height: 1.35;
  }

  /* Inquiry, Locations, FAQ & Floating Bar Mobile Optimization */
  .contact-direct-box h3,
  .plant-box-head h3,
  .form-card-head h3 {
    font-size: 1.25rem;
    line-height: 1.3;
  }

  /* Prevent orphan '연구소)' in Plant Locations heading on mobile */
  .plant-head-sub {
    display: block;
    font-size: 0.83rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 3px;
  }

  .direct-sub {
    font-size: 0.84rem;
    margin-bottom: 18px;
  }

  .channel-item {
    padding: 13px 14px;
    gap: 11px;
  }

  .channel-svg-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
  }

  .channel-text {
    min-width: 0;
  }

  .channel-label {
    font-size: 0.72rem;
    line-height: 1.35;
    word-break: keep-all;
  }

  .channel-val {
    font-size: 0.94rem;
    word-break: break-all;
  }

  /* Clean, 100% uniform Plant Location Cards on Mobile (All 3 cards share identical layout & bottom 3-button bar) */
  .location-item {
    padding: 15px 15px;
    display: flex;
    flex-direction: column;
  }

  .location-item .loc-header {
    display: contents;
  }

  .location-item .loc-tag {
    order: 1;
    align-self: flex-start;
    margin-bottom: 7px;
  }

  .location-item .loc-addr {
    order: 2;
    font-size: 0.93rem;
    line-height: 1.4;
    margin-bottom: 3px;
  }

  .location-item .loc-note {
    order: 3;
    font-size: 0.76rem;
    letter-spacing: -0.025em;
    line-height: 1.45;
  }

  .location-item .loc-actions {
    order: 4;
    margin-top: 11px;
    padding-top: 10px;
    border-top: 1px solid var(--border-silver);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    width: 100%;
  }

  .location-item .loc-actions .btn-copy-addr,
  .location-item .loc-actions .btn-map {
    width: 100%;
    height: 32px;
    padding: 0 6px;
    font-size: 0.74rem;
  }

  /* Compact Mobile-Standard Footer (Hide redundant sitemap columns on mobile) */
  .site-footer {
    padding: 42px 0 36px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 0;
    margin-bottom: 22px;
  }

  .footer-links-group {
    display: none;
  }

  .footer-logo {
    height: 32px;
    margin-bottom: 10px;
  }

  .footer-slogan {
    font-size: 0.7rem;
    margin-bottom: 8px;
  }

  .footer-desc {
    font-size: 0.82rem;
    line-height: 1.58;
  }

  .footer-divider {
    margin-bottom: 16px;
  }

  .footer-legal-bar {
    gap: 8px;
    margin-bottom: 14px;
  }

  .footer-legal-btn {
    font-size: 0.78rem;
  }

  .biz-legal-info {
    font-size: 0.75rem;
    line-height: 1.72;
  }

  .copyright {
    font-size: 0.73rem;
  }

  .minimal-form {
    gap: 22px;
  }

  .form-row-3col {
    gap: 20px;
  }

  .quick-chip-btn {
    padding: 7px 12px;
    font-size: 0.76rem;
  }

  .privacy-checkbox-label {
    align-items: flex-start;
  }

  .custom-checkbox {
    margin-top: 2px;
  }

  .consent-text {
    font-size: 0.84rem;
    line-height: 1.45;
  }

  .btn-submit {
    width: 100%;
    justify-content: center;
    padding: 15px 24px;
    font-size: 0.95rem;
  }

  .faq-question {
    padding: 15px 15px;
    gap: 10px;
  }

  .faq-q-text {
    font-size: 0.9rem;
    line-height: 1.42;
  }

  .faq-answer {
    padding: 0 15px 15px 15px;
    font-size: 0.85rem;
    line-height: 1.65;
  }

  .quote-modal-card,
  .legal-modal-card {
    padding: 24px 18px;
    max-height: 88vh;
    overflow-y: auto;
  }

  .floating-quick-bar {
    right: 12px;
    bottom: 14px;
    gap: 7px;
  }

  .floating-call-btn {
    display: inline-flex;
  }

  .floating-call-btn,
  .floating-quote-btn {
    padding: 9px 14px;
    font-size: 0.75rem;
  }

  .floating-top-btn {
    width: 42px;
    height: 42px;
  }

  /* Fix mobile sticky :hover bug while ensuring a crisp, visible tactile press animation (.is-pressed / :active) */
  .floating-top-btn:hover,
  .floating-top-btn:focus {
    background: rgba(255, 255, 255, 0.92);
    color: var(--color-navy);
    border-color: var(--border-silver);
    transform: scale(1);
  }

  .floating-top-btn:active,
  .floating-top-btn.is-pressed {
    background: var(--color-navy) !important;
    color: #FFFFFF !important;
    border-color: var(--color-navy) !important;
    transform: scale(0.84) !important;
    box-shadow: 0 4px 16px rgba(17, 24, 39, 0.36) !important;
    transition: transform 0.1s ease, background-color 0.1s ease, color 0.1s ease !important;
  }

  .floating-quote-btn:hover,
  .floating-quote-btn:focus {
    background: var(--color-cobalt);
    transform: scale(1);
  }

  .floating-quote-btn:active,
  .floating-quote-btn.is-pressed {
    background: var(--color-navy) !important;
    transform: scale(0.9) !important;
    transition: transform 0.1s ease, background-color 0.1s ease !important;
  }

  .floating-call-btn:hover,
  .floating-call-btn:focus {
    background: rgba(17, 24, 39, 0.92);
    transform: scale(1);
  }

  .floating-call-btn:active,
  .floating-call-btn.is-pressed {
    background: var(--color-cobalt) !important;
    transform: scale(0.9) !important;
    transition: transform 0.1s ease, background-color 0.1s ease !important;
  }

  .btn-copy-addr:hover,
  .btn-copy-addr:focus,
  .btn-map:hover,
  .btn-map:focus {
    background: var(--bg-offwhite);
    border-color: var(--border-silver);
    color: var(--color-navy);
  }

  .btn-copy-addr:active,
  .btn-map:active {
    background: var(--color-cobalt-light);
    border-color: var(--color-cobalt);
    color: var(--color-cobalt);
    transform: scale(0.96);
  }

  /* Mobile Toast Notification: Centered right below the fixed header so it never overlaps floating buttons */
  .toast-notification {
    top: calc(var(--header-height) + 10px);
    bottom: auto;
    left: 50%;
    right: auto;
    width: max-content;
    max-width: calc(100vw - 28px);
    padding: 11px 18px;
    font-size: 0.82rem;
    border-radius: 999px;
    transform: translate(-50%, -16px);
  }

  .toast-notification.show {
    transform: translate(-50%, 0);
  }
}

@media (max-width: 540px) {
  .metrics-grid,
  .strengths-grid,
  .timeline-grid {
    grid-template-columns: 1fr;
  }

  /* Keep clean 2-column Corporate Profile layout even on narrow phones */
  .fact-item {
    grid-template-columns: 98px 1fr;
    gap: 8px;
  }

  .comp-imgs {
    grid-template-columns: 1fr;
  }

  .comp-img-item img {
    height: 140px;
  }
}

/* (7) B2B Corporate Print Stylesheet (@media print) */
@media print {
  .site-header,
  .hero-minimal-bar,
  .hero-cta-group,
  .floating-quick-bar,
  .toast-notification,
  .lightbox-modal,
  .quote-modal,
  .btn-spec-toggle,
  .product-filter-bar {
    display: none !important;
  }

  body {
    background: #FFFFFF !important;
    color: #000000 !important;
  }

  .section {
    padding: 36px 0 !important;
    page-break-inside: avoid;
  }

  .reveal-up {
    opacity: 1 !important;
    transform: none !important;
  }
}