/* ==========================================================================
   ELAB Materials Analysis Institute - Official Design System & Stylesheet
   Multi-Page Website Shared Stylesheet
   Color Palette: Primary Navy (#102A43), Deep Navy (#071B2B), Warm Gray (#B8AAA0)
   Clean, precise, professional engineering aesthetic
   ========================================================================== */

:root {
  /* Brand Palette */
  --primary-navy: #102A43;
  --primary-navy-hover: #0A1C2E;
  --deep-navy: #071B2B;
  --text-black: #1C232B;
  --bg-white: #FFFFFF;
  --light-bg: #F4F6F8;
  --secondary-gray: #6B7280;
  --warm-gray-accent: #B8AAA0;
  --border-gray: #D8DDE3;

  /* Additional Functional Tones */
  --badge-bg: #EAEFEF;
  --card-shadow: 0 4px 16px rgba(7, 27, 43, 0.06);
  --card-shadow-hover: 0 12px 28px rgba(7, 27, 43, 0.12);

  /* Radius & Transitions */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  --transition-fast: all 0.2s ease-in-out;
  --transition-normal: all 0.3s ease-in-out;
}

/* Reset & Base Settings */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans KR', sans-serif;
  background-color: var(--bg-white);
  color: var(--text-black);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
.section-tag {
  display: inline-block;
  padding: 6px 14px;
  background-color: rgba(16, 42, 67, 0.08);
  color: var(--primary-navy);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  border: 1px solid rgba(16, 42, 67, 0.15);
}

.section-tag.tag-light {
  background-color: rgba(184, 170, 160, 0.15);
  color: var(--warm-gray-accent);
  border-color: rgba(184, 170, 160, 0.3);
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--primary-navy);
  letter-spacing: -0.5px;
  line-height: 1.35;
  margin-bottom: 16px;
}

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

.section-desc {
  font-size: 1.05rem;
  color: var(--secondary-gray);
  max-width: 720px;
  line-height: 1.7;
}

.section-desc.desc-white {
  color: #D1D5DB;
}

.text-center {
  text-align: center;
}

.text-center .section-desc {
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 0.975rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-navy);
  color: var(--bg-white);
  box-shadow: 0 2px 6px rgba(16, 42, 67, 0.15);
}

.btn-primary:hover {
  background-color: var(--primary-navy-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-white);
  border-color: var(--border-gray);
  color: var(--text-black);
}

.btn-secondary:hover {
  background-color: var(--light-bg);
  border-color: var(--primary-navy);
}

.btn-outline-white {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--bg-white);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--bg-white);
}

.btn-link {
  color: var(--primary-navy);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.95rem;
}

.btn-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--border-gray);
  transition: background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px) saturate(200%);
  -webkit-backdrop-filter: blur(16px) saturate(200%);
  box-shadow: 0 10px 30px rgba(7, 27, 43, 0.08);
  border-bottom-color: rgba(16, 42, 67, 0.12);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100px;
}

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

.logo-img {
  width: 135px;
  height: auto;
  max-height: 46px;
  object-fit: contain;
  display: block;
}

.logo-img-footer {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.logo-brand {
  display: none;
}

.logo-sub {
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--primary-navy);
  border-left: 1px solid var(--border-gray);
  padding-left: 12px;
  letter-spacing: -0.2px;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
  margin-right: 28px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-black);
  padding: 6px 0;
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-navy);
  transition: var(--transition-fast);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-cta {
  padding: 11px 22px;
  font-size: 0.9rem;
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--primary-navy);
  cursor: pointer;
  padding: 6px;
}

/* Mobile Drawer Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(7, 27, 43, 0.6);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -300px;
  width: 280px;
  height: 100vh;
  background-color: var(--bg-white);
  z-index: 1002;
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
  transition: var(--transition-normal);
}

.mobile-nav-drawer.active {
  right: 0;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-gray);
  margin-bottom: 24px;
}

.close-drawer-btn {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-black);
  cursor: pointer;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.mobile-nav-link {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-navy);
}

.mobile-nav-link.active {
  color: var(--primary-navy);
  font-weight: 900;
}

/* ==========================================================================
   Page Banners (Subpage Headers)
   ========================================================================== */
.page-banner {
  padding: 155px 0 75px;
  min-height: 270px;
  background-color: var(--deep-navy);
  color: var(--bg-white);
  position: relative;
  overflow: hidden;
}

.page-banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('images/subpage_header_banner.jpg') right top / cover no-repeat;
}

/* Deep dark overlay for banner image (30% image light level) */
.page-banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(7, 14, 27, 0.82);
  pointer-events: none;
}

.page-banner-content {
  position: relative;
  z-index: 2;
}

.page-banner-tag {
  display: inline-block;
  padding: 4px 12px;
  background-color: rgba(184, 170, 160, 0.2);
  color: var(--warm-gray-accent);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.page-banner-title {
  font-size: 2.3rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 10px;
}

.page-banner-desc {
  font-size: 1.05rem;
  color: #CBD5E1;
  max-width: 680px;
}

/* ==========================================================================
   Hero Section (Main Page)
   ========================================================================== */
.hero {
  position: relative;
  padding: 155px 0 36px;
  background-color: #070E1B;
  color: var(--bg-white);
  overflow: hidden;
}

/* Right side large main visual container (1번 사진) */
.hero-visual-container {
  position: absolute;
  top: 0;
  right: 0;
  width: 58%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.hero-visual-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  display: block;
}

/* Wide Shading Overlay to seamlessly fade image edges into dark navy background */
.hero-visual-shading {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(to right, #070E1B 0%, rgba(7, 14, 27, 0.92) 20%, rgba(7, 14, 27, 0.55) 45%, rgba(7, 14, 27, 0.15) 75%, transparent 100%),
    linear-gradient(to bottom, #070E1B 0%, transparent 18%, transparent 82%, #070E1B 100%),
    linear-gradient(to left, rgba(7, 14, 27, 0.5) 0%, transparent 20%);
}

.hero-container-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 40px;
  align-items: flex-end;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-slogan-badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(16, 32, 54, 0.65);
  border: 1px solid rgba(80, 115, 160, 0.3);
  color: #CBD5E1; /* Off-white light-slate matching reference Image 2 */
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 4px;
  margin-bottom: 22px;
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 18px;
  color: #FFFFFF;
}

.hero-title span {
  color: #79A7D9; /* Soft subdued steel blue matching reference Image 2 */
}

.hero-highlight {
  font-size: 1.025rem;
  font-weight: 600;
  color: #CBD5E1;
  margin-bottom: 22px;
  border-left: 2px solid #5A82B8;
  padding-left: 12px;
  line-height: 1.6;
}

.hero-description {
  font-size: 0.95rem;
  color: #94A3B8;
  line-height: 1.7;
  margin-bottom: 14px;
}

.hero-description:last-of-type {
  margin-bottom: 0;
}

/* Feature Items Row (Matching Reference Image 2) */
.hero-features-row {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 32px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  background: transparent;
  border: none;
  backdrop-filter: none;
}

.hero-feature-icon {
  color: #6FA2D9; /* Steel blue icon color matching reference Image 2 */
  flex-shrink: 0;
}

.hero-feature-text {
  font-size: 0.925rem;
  font-weight: 600;
  color: #E2E8F0;
  line-height: 1.35;
  white-space: nowrap;
}

.hero-feature-divider {
  width: 1px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.15);
  margin: 0 4px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 170px;
  padding: 13px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 5px;
  cursor: pointer;
  text-align: center;
  transition: var(--transition-fast);
  white-space: nowrap;
  box-sizing: border-box;
  text-decoration: none;
}

/* 분석 서비스 보기 (Steel Blue Button - Exact match with Reference Image 2) */
.hero-btn-secondary {
  background-color: #2D5894;
  border: 1px solid #3F6DAF;
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(7, 27, 43, 0.2);
}

.hero-btn-secondary:hover {
  background-color: #24497D;
  border-color: #4C7CC2;
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* 견적 문의하기 (Glass Outline Button - Exact match with Reference Image 2) */
.hero-btn-primary {
  background-color: rgba(10, 22, 38, 0.6);
  border: 1px solid rgba(80, 120, 175, 0.4);
  color: #FFFFFF;
}

.hero-btn-primary:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(203, 213, 225, 0.7);
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* Right Column: 3 Image Overlay Cards */
.hero-cards-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: auto;
}

.hero-card-item {
  background: rgba(11, 20, 38, 0.75);
  border: 1px solid rgba(100, 116, 139, 0.3);
  border-radius: 8px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
  position: relative;
}

.hero-card-item:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(37, 99, 235, 0.2);
}

.hero-card-img-box {
  width: 100%;
  height: 110px;
  overflow: hidden;
  position: relative;
  background-color: #030712;
}

.hero-card-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.hero-card-item:hover .hero-card-img-box img {
  transform: scale(1.06);
}

/* Hover overlay badge (Disabled - No '클릭하여 확대' overlay text) */
.hero-card-img-box::after {
  display: none !important;
}

.hero-card-label {
  padding: 10px 6px;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #E2E8F0;
  background: rgba(7, 14, 27, 0.92);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  white-space: nowrap;
  transition: color 0.2s ease;
}

.hero-card-item:hover .hero-card-label {
  color: #93C5FD;
}

/* Static Hero Card (No Lightbox / No Image Zoom / No Overlay) */
.hero-card-item.no-lightbox {
  cursor: default;
}

.hero-card-item.no-lightbox .hero-card-img-box::after {
  display: none !important;
}

.hero-card-item.no-lightbox:hover .hero-card-img-box img {
  transform: none;
  filter: none;
  opacity: 1;
}

.hero-card-item.no-lightbox:hover .hero-card-label {
  color: #E2E8F0;
}

/* --------------------------------------------------------------------------
   Hero Card Image Lightbox Modal
   -------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------
   Hero Card & Technical Analysis Image Lightbox Modal (Premium Light Theme)
   -------------------------------------------------------------------------- */
.hero-lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(8, 15, 28, 0.68);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.hero-lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.hero-lightbox-container {
  position: relative;
  background: #ffffff;
  border: 1px solid #dfe4ea;
  border-radius: 16px;
  max-width: 1140px;
  width: 100%;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
  transform: scale(0.96);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.hero-lightbox-overlay.active .hero-lightbox-container {
  transform: scale(1);
}

.hero-lightbox-close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: rgba(241, 245, 249, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #102A43;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all 0.2s ease;
}

.hero-lightbox-close:hover {
  background: #102A43;
  color: #ffffff;
  border-color: #102A43;
  transform: scale(1.06);
}

.hero-lightbox-header {
  padding: 14px 20px 12px;
  border-bottom: 1px solid #edf1f5;
  background: #ffffff;
}

.hero-lightbox-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin: 0;
  line-height: 1.3;
}

.hero-lightbox-img-box {
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f8fafc;
  overflow: auto;
  max-height: calc(92vh - 65px);
}

.hero-lightbox-img-box img {
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid #edf1f5;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

/* Bottom Keyword Ticker Strip */
.hero-ticker-container {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-ticker-text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 36px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 3.5px;
  text-transform: uppercase;
}

.hero-ticker-text .ticker-tech {
  display: inline-flex;
  align-items: center;
  gap: 0;
  color: rgba(145, 165, 195, 0.45);
}

.hero-ticker-text .ticker-brand-group {
  display: inline-flex;
  align-items: center;
  gap: 36px;
}

.hero-ticker-text .ticker-slogan {
  color: rgba(170, 170, 175, 0.50);
}

.hero-ticker-text .ticker-brand {
  color: rgba(180, 160, 150, 0.55);
}

/* Responsive Media Queries for Hero */
@media (max-width: 1024px) {
  .hero-container-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .hero-visual-container {
    width: 100%;
    opacity: 0.35;
  }

  .hero-cards-wrapper {
    max-width: 550px;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 120px 0 30px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-cards-wrapper {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .hero-card-img-box {
    height: 140px;
  }
}

.core-value-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
}

.core-value-num {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--warm-gray-accent);
  margin-bottom: 4px;
}

.core-value-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--bg-white);
}

/* ==========================================================================
   Company Intro / About ELAB
   ========================================================================== */
.about {
  padding: 90px 0;
  background-color: var(--bg-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 540px 1fr;
  gap: 52px;
  align-items: stretch;
}

.about-content-wrapper {
  height: auto;
  min-height: 0;
  align-self: start;
}

.about-image-wrapper {
  position: relative;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  align-self: stretch;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-gray);
  box-shadow: var(--card-shadow);
}

.about-image-wrapper .about-img,
.about-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius-md);
  display: block;
}

.about-text-content {
  font-size: 1rem;
  color: var(--secondary-gray);
  line-height: 1.75;
  margin-top: 16px;
  margin-bottom: 0;
}

.about-actions-inline {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* ==========================================================================
   Analysis Services
   ========================================================================== */
.services {
  padding: 90px 0;
  background-color: var(--light-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
  margin-top: 44px;
  align-items: start;
}

.service-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: auto;
  align-self: start;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-navy);
}

.service-title {
  order: 1;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 10px;
}

.service-title-link {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

.service-title-link:hover {
  color: #1D4ED8;
  text-decoration: underline;
}

.service-desc {
  order: 2;
  font-size: 0.925rem;
  color: var(--secondary-gray);
  line-height: 1.6;
  margin-bottom: 0;
  min-height: 48px;
}

.service-items {
  margin-top: auto;
  border-top: 1px solid var(--border-gray);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.service-item {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-black);
  display: flex;
  align-items: center;
  gap: 6px;
}

.service-item::before {
  content: '▪';
  color: var(--primary-navy);
}

/* ==========================================================================
   Infrastructure Section (분석 인프라)
   ========================================================================== */
.infrastructure {
  padding: 52px 0;
  background-color: var(--deep-navy);
  color: var(--bg-white);
}

.infrastructure .section-title {
  margin-bottom: 10px;
}

.infrastructure .section-desc {
  max-width: 820px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  word-break: keep-all;
  font-size: 0.95rem;
  line-height: 1.55;
  color: #CBD5E1;
}

.infra-open-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 32px;
  position: relative;
}

.infra-column {
  padding: 0 36px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: none;
  border-radius: 0;
  box-shadow: none;
}

.infra-column:first-child {
  padding-left: 0;
}

.infra-column:last-child {
  padding-right: 0;
  border-right: none;
}

.infra-col-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--warm-gray-accent);
  text-transform: uppercase;
}

.infra-column-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bg-white);
  line-height: 1.3;
  margin: 0;
}

.infra-divider {
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.14);
  margin: 4px 0 6px 0;
}

.infra-col-content {
  font-size: 0.95rem;
  font-weight: 600;
  color: #F8FAFC;
  line-height: 1.5;
}

.infra-col-desc {
  font-size: 0.85rem;
  color: #94A3B8;
  line-height: 1.55;
  margin-top: 4px;
  word-break: keep-all;
}

.infra-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  background-color: rgba(184, 170, 160, 0.18);
  color: var(--warm-gray-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  font-feature-settings: "tnum";
}

.infra-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--bg-white);
}

.infra-sub-notice {
  margin-top: 16px;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--warm-gray-accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

.infra-sub-notice::before {
  content: 'ℹ';
  font-weight: bold;
}

.infra-notice-box {
  margin-top: 40px;
  background: rgba(184, 170, 160, 0.1);
  border: 1px solid rgba(184, 170, 160, 0.25);
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.95rem;
  color: #E2D9D2;
  line-height: 1.6;
}

/* ==========================================================================
   Analysis Case Studies
   ========================================================================== */
/* ==========================================================================
   Analysis Case Studies & Sticky Category Nav (cases.html)
   ========================================================================== */
.cases-category-nav {
  position: sticky;
  top: var(--header-height, 100px);
  z-index: 900;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-gray);
  box-shadow: 0 4px 10px rgba(7, 27, 43, 0.04);
}

.cases-category-container {
  display: flex;
  align-items: center;
  gap: 16px;
  overflow-x: auto;
  white-space: nowrap;
  padding: 14px 24px;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x pan-y;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

.cases-category-container::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.cases-tab-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px 12px;
  font-size: 16px;
  font-weight: 700;
  color: #374151;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  position: relative;
}

.cases-tab-btn:hover {
  color: var(--primary-navy);
  background-color: rgba(16, 42, 67, 0.04);
}

.cases-tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--primary-navy);
  border-radius: 3px 3px 0 0;
  transition: var(--transition-fast);
}

.cases-tab-btn.active {
  font-size: 17px;
  font-weight: 800;
  color: var(--primary-navy);
  background-color: transparent;
}

.cases-tab-btn.active::after {
  width: 100%;
}

.cases-category-sec {
  padding: 50px 0;
  border-bottom: 1px solid var(--border-gray);
  scroll-margin-top: calc(var(--header-height, 100px) + var(--tab-height, 54px) + 14px);
}

.cases-category-sec:last-of-type {
  border-bottom: none;
}

.cases-category-header {
  margin-bottom: 24px;
}

.cases-category-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cases-category-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background-color: var(--primary-navy);
  border-radius: 2px;
}

.cases-category-desc {
  font-size: 0.9rem;
  color: var(--secondary-gray);
}

.cases {
  padding: 90px 0;
  background-color: var(--bg-white);
}

.cases-filter {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 32px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  background-color: var(--light-bg);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--secondary-gray);
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-color: var(--primary-navy);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.case-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-navy);
}

.case-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 16px;
  line-height: 1.4;
}

.case-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
  flex-grow: 1;
}

.case-list-item {
  font-size: 0.875rem;
  color: var(--secondary-gray);
  padding-left: 14px;
  position: relative;
}

.case-list-item::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary-navy);
  font-weight: 800;
}

.case-action-btn {
  align-self: flex-start;
  padding: 8px 16px;
  background-color: var(--light-bg);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-navy);
  cursor: pointer;
  transition: var(--transition-fast);
}

.case-action-btn:hover {
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-color: var(--primary-navy);
}

/* Modal Window */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(7, 27, 43, 0.7);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Technical Analysis Panel (사례 1 기술 패널 디자인) */
.tech-case-panel {
  background: #ffffff;
  border: 1px solid #dfe4ea;
  border-radius: 6px;
  padding: 16px 18px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.tech-case-panel:hover {
  transform: translateY(-2px);
  border-color: #c7d0da;
}

.tech-panel-header-main {
  margin-bottom: 12px;
  border-bottom: 1px dashed #e2e8f0;
  padding-bottom: 10px;
}

.tech-panel-main-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #173553;
  margin-bottom: 6px;
}

.tech-panel-desc-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tech-panel-desc-item {
  font-size: 0.85rem;
  color: #6b7280;
  line-height: 1.45;
}

.tech-panel-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
  margin-bottom: 0;
}

.tech-panel-macro-row {
  display: grid;
  grid-template-columns: 1.5148fr 1.7809fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-item {
  background: #ffffff;
  border: 1px solid #dfe4ea;
  border-radius: 6px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  box-shadow: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
  height: 100%;
}

.tech-panel-item:hover {
  border-color: #c7d0da;
  transform: translateY(-1px);
}

.tech-panel-item-header {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.tech-panel-tag {
  background: #0d3157;
  color: #ffffff;
  font-size: 0.725rem;
  font-weight: 700;
  border-radius: 2px;
  padding: 2px 6px;
  line-height: 1.3;
  flex-shrink: 0;
  margin-top: 2px;
}

.tech-panel-title-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.tech-panel-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #173553;
  line-height: 1.3;
}

.tech-panel-sub {
  font-size: 0.8rem;
  color: #6b7280;
  line-height: 1.3;
}

.tech-panel-img-box {
  background: #ffffff;
  border: 1px solid #edf2f7;
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  flex-grow: 1;
}

.tech-panel-img-box img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  border-radius: 2px;
  cursor: zoom-in;
  transition: transform 0.25s ease, filter 0.25s ease;
}

.tech-panel-img-box img:hover {
  transform: scale(1.015);
  filter: brightness(1.03);
}

.tech-panel-footer {
  display: flex;
  justify-content: center;
  margin-top: 8px;
}

.tech-panel-btn {
  background: #0d3157;
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 9px 24px;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tech-panel-btn:hover {
  background: #134074;
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .tech-panel-macro-row {
    grid-template-columns: 1fr;
  }
}

.tech-panel-ingot-row {
  display: grid;
  grid-template-columns: 2.516fr 2.296fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-damage-row1 {
  display: grid;
  grid-template-columns: 1.590fr 1.690fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-damage-row2 {
  display: grid;
  grid-template-columns: 1.889fr 1.872fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-weld-row {
  display: grid;
  grid-template-columns: 1.600fr 1.796fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-replica-row {
  display: grid;
  grid-template-columns: 1.247fr 2.359fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-sem-row1 {
  display: grid;
  grid-template-columns: 2.016fr 2.156fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-sem-row2 {
  display: grid;
  grid-template-columns: 2.090fr 1.595fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-flowline-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: stretch;
}

.tech-panel-epma-row {
  display: grid;
  grid-template-columns: 2.090fr 1.595fr;
  gap: 12px;
  align-items: stretch;
}

@media (max-width: 768px) {
  .tech-panel-ingot-row,
  .tech-panel-damage-row1,
  .tech-panel-damage-row2,
  .tech-panel-weld-row,
  .tech-panel-replica-row,
  .tech-panel-sem-row1,
  .tech-panel-sem-row2,
  .tech-panel-flowline-row,
  .tech-panel-epma-row {
    grid-template-columns: 1fr;
  }
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--light-bg);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--secondary-gray);
}

/* ==========================================================================
   Estimate Request Form (견적 문의)
   ========================================================================== */
.estimate {
  padding: 90px 0;
  background-color: var(--light-bg);
}

.estimate-card {
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-gray);
  box-shadow: var(--card-shadow);
  padding: 40px;
  margin-top: 36px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-navy);
}

.form-label span {
  color: #DC2626;
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-sm);
  background-color: var(--bg-white);
  color: var(--text-black);
  transition: var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-navy);
  box-shadow: 0 0 0 3px rgba(16, 42, 67, 0.1);
}

textarea.form-control {
  min-height: 100px;
  resize: vertical;
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 4px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background-color: var(--light-bg);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-black);
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-navy);
}

.estimate-notice-box {
  background-color: rgba(16, 42, 67, 0.04);
  border: 1px solid rgba(16, 42, 67, 0.12);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.875rem;
  color: var(--secondary-gray);
  line-height: 1.6;
  margin-top: 24px;
  margin-bottom: 24px;
}

/* CTA Banner Section */
.cta-banner-section {
  padding: 60px 0;
  background-color: var(--primary-navy);
  color: var(--bg-white);
  text-align: center;
}

.cta-banner-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-banner-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-banner-desc {
  font-size: 1rem;
  color: #D1D5DB;
  margin-bottom: 24px;
}

/* ==========================================================================
   Contact & Location
   ========================================================================== */
.contact {
  padding: 90px 0;
  background-color: var(--bg-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 44px;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  padding: 20px;
  background-color: var(--light-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-gray);
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-card-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card-title {
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--secondary-gray);
  margin-bottom: 2px;
}

.contact-card-value {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary-navy);
}

.contact-card-value a:hover {
  text-decoration: underline;
  color: #2563EB;
}

.contact-card-sub {
  font-size: 0.85rem;
  color: var(--secondary-gray);
  margin-top: 2px;
}

.map-card-box {
  background-color: var(--deep-navy);
  border-radius: var(--radius-md);
  padding: 36px;
  color: var(--bg-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.map-pin-icon {
  width: 54px;
  height: 54px;
  background-color: rgba(184, 170, 160, 0.18);
  color: var(--warm-gray-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.map-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.map-address-text {
  font-size: 0.95rem;
  color: #CBD5E1;
  margin-bottom: 20px;
}

.map-notice-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--warm-gray-accent);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--deep-navy);
  color: var(--bg-white);
  padding: 50px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-info p {
  color: #94A3B8;
  font-size: 0.875rem;
  margin-top: 10px;
  line-height: 1.6;
}

.footer-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--bg-white);
  margin-bottom: 14px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.875rem;
}

.footer-links a:hover {
  color: var(--bg-white);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.825rem;
  color: #64748B;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   Service Accordion (서비스 세부항목 펼침/접기)
   ========================================================================== */
.service-accordion-btn {
  order: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-navy);
  cursor: pointer;
  margin-top: 22px;
  transition: var(--transition-fast);
  gap: 8px;
}

.service-accordion-btn:hover {
  background-color: rgba(16, 42, 67, 0.05);
  border-color: var(--primary-navy);
}

.service-accordion-btn .accordion-chevron {
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.service-accordion-btn.open .accordion-chevron {
  transform: rotate(180deg);
}

.service-accordion-body {
  order: 4;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  padding-top: 0;
  padding-bottom: 0;
  transition: max-height 0.35s ease, opacity 0.25s ease, margin-top 0.25s ease;
}

.service-accordion-body.open {
  max-height: 600px;
  opacity: 1;
  margin-top: 14px;
}

.service-accordion-inner {
  border-top: 1px solid var(--border-gray);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-height: 175px;
}

.service-detail-item {
  font-size: 0.85rem;
  color: var(--text-black);
  display: flex;
  align-items: flex-start;
  gap: 7px;
  line-height: 1.5;
}

.service-detail-item::before {
  content: '▸';
  color: var(--primary-navy);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ==========================================================================
   Analysis Process Steps (분석 진행 절차)
   ========================================================================== */
.process {
  padding: 60px 0;
  background-color: var(--light-bg);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 36px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 18px;
  left: calc(10% + 10px);
  right: calc(10% + 10px);
  height: 2px;
  background-color: #CBD5E1;
  z-index: 0;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 10px;
}

.process-step-num {
  width: 38px;
  height: 38px;
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 12px;
  border: 3px solid var(--light-bg);
  box-shadow: none;
}

.process-step-title {
  font-size: 0.975rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 6px;
}

.process-step-desc {
  font-size: 0.825rem;
  color: var(--secondary-gray);
  line-height: 1.5;
  max-width: 190px;
}

/* ==========================================================================
   Infra Detail Cards (상세 설명 포함)
   ========================================================================== */
.infra-card-detail {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 22px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.infra-card-detail .infra-icon {
  margin-bottom: 4px;
}

.infra-card-detail .infra-name {
  font-size: 1rem;
  font-weight: 800;
}

.infra-card-detail .infra-desc {
  font-size: 0.835rem;
  color: #9BB0C4;
  line-height: 1.5;
}

/* ==========================================================================
   Subpage Page Banner Breadcrumb Nav
   ========================================================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.825rem;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 14px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.55);
}

.breadcrumb a:hover {
  color: var(--bg-white);
}

.breadcrumb-sep {
  opacity: 0.4;
}

/* ==========================================================================
   Contact Full Page (contact.html)
   ========================================================================== */
/* ==========================================================================
   Contact Full Page (contact.html)
   ========================================================================== */
.contact-full {
  padding: 80px 0;
  background-color: var(--bg-white);
}

.contact-full-grid {
  display: grid;
  grid-template-columns: 55fr 45fr;
  gap: 40px;
  margin-top: 48px;
  align-items: stretch;
}

.contact-full-cards {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  gap: 0;
}

.contact-card {
  padding: 18px 22px;
  background-color: var(--light-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-gray);
  display: flex;
  align-items: center;
  gap: 20px;
  transition: var(--transition-fast);
}

.contact-card:hover {
  border-color: var(--primary-navy);
  box-shadow: 0 4px 12px rgba(7, 27, 43, 0.05);
}

.contact-card-icon {
  width: 54px;
  height: 54px;
  min-width: 54px;
  flex-shrink: 0;
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-card-title {
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--secondary-gray);
  margin-bottom: 2px;
}

.contact-card-value {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary-navy);
  line-height: 1.35;
}

.contact-card-value a {
  color: var(--primary-navy);
}

.contact-card-value a:hover {
  text-decoration: underline;
  color: #2563EB;
}

.contact-card-sub {
  font-size: 0.85rem;
  color: var(--secondary-gray);
  margin-top: 3px;
}

.contact-right-column {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: 20px;
}

/* 오른쪽 방문 및 시료 접수 안내 네이비 박스 */
.contact-info-navy-box {
  background-color: var(--deep-navy);
  border-radius: var(--radius-lg);
  padding: 32px 30px;
  color: var(--bg-white);
  display: flex;
  flex-direction: column;
  gap: 22px;
  box-shadow: 0 8px 24px rgba(7, 27, 43, 0.12);
}

.navy-box-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.navy-box-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  flex-shrink: 0;
  background: rgba(184, 170, 160, 0.18);
  color: var(--warm-gray-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.navy-box-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--bg-white);
}

.navy-box-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navy-box-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.925rem;
  color: #CBD5E1;
  line-height: 1.5;
}

.navy-box-item .check-icon {
  color: var(--warm-gray-accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.navy-box-action {
  margin-top: 4px;
  text-align: left;
}

/* 별도 지도 영역 카드 (시료 접수 위치) */
.contact-map-card {
  background-color: var(--light-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-gray);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1;
  gap: 14px;
  transition: var(--transition-fast);
}

.contact-map-card:hover {
  border-color: var(--primary-navy);
  box-shadow: 0 4px 12px rgba(7, 27, 43, 0.05);
}

.map-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.map-card-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  flex-shrink: 0;
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-card-title {
  font-size: 0.975rem;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 2px;
}

.map-card-address {
  font-size: 0.85rem;
  color: var(--secondary-gray);
  line-height: 1.35;
}

.map-preview-box {
  height: 105px;
  min-height: 105px;
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-gray);
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-preview-overlay {
  position: relative;
  z-index: 2;
}

.map-pin-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  background-color: var(--primary-navy);
  color: var(--bg-white);
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 700;
  border: 1px solid rgba(184, 170, 160, 0.4);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.map-pin-badge svg {
  color: var(--warm-gray-accent);
}

.map-card-footer {
  text-align: left;
}

.map-external-link {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary-navy);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.map-external-link:hover {
  text-decoration: underline;
  color: #2563EB;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .about-grid,
  .contact-grid,
  .contact-full-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .about-image-wrapper {
    height: 320px;
  }
  .infra-open-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .infra-column {
    padding: 0 0 20px 0;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .infra-column:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .process-steps::before {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-menu,
  .header-cta {
    display: none;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .hero {
    padding: 120px 0 60px;
  }
  .page-banner {
    padding: 110px 0 40px;
  }
  .page-banner-title {
    font-size: 1.8rem;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-core-values {
    grid-template-columns: 1fr;
  }
  .competencies-grid {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .cases-grid {
    grid-template-columns: 1fr;
  }
  .infra-grid {
    grid-template-columns: 1fr;
  }
  .navy-box-action .btn {
    width: 100%;
  }
  .hero-actions {
    margin-top: 30px;
    margin-bottom: 40px;
  }
  .hero-btn {
    min-width: 140px;
    padding: 13px 20px;
    font-size: 0.95rem;
    flex: 1;
  }
}

/* ==========================================================================
   Footer (밝은 회백색 배경 - #F4F6F8 & 정돈된 브랜드 텍스트 시스템)
   ========================================================================== */
.footer {
  background-color: #F4F6F8;
  color: #64748B;
  padding: 45px 0 20px;
  border-top: 1px solid #D4DCE4;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 20px;
}

.footer-info {
  text-align: left;
  padding-top: 10px;
}

.footer-logo-link {
  display: inline-block;
  text-align: left;
  margin-bottom: 0;
  margin-top: 0;
  text-decoration: none;
}

.footer .footer-logo-img,
footer .footer-logo-img {
  width: 147px !important;
  max-width: 147px !important;
  height: auto !important;
  flex: 0 0 auto !important;
  display: block !important;
  margin: 0 0 16px 0 !important;
  border: none;
  box-shadow: none;
  filter: none;
}

.footer-company-info {
  display: block;
  width: fit-content;
  max-width: 100%;
  margin: 0 !important;
  text-align: left !important;
  font-size: 14.7px;
  font-weight: 400;
  line-height: 1.75;
  color: #586F85;
  letter-spacing: 0;
}

.footer-info-line {
  font-size: 14.7px !important;
  font-weight: 400 !important;
  line-height: 1.75 !important;
  color: #586F85 !important;
  letter-spacing: 0 !important;
  text-align: left !important;
  white-space: nowrap;
}

.footer-company-info a,
.footer-company-info span,
.footer-company-info strong,
.footer-company-info b {
  font-size: 14.7px !important;
  font-weight: 400 !important;
  line-height: 1.75 !important;
  color: #586F85 !important;
  letter-spacing: 0 !important;
  text-decoration: none !important;
}

.footer-services-col,
.footer-nav-col {
  text-align: left;
}

.footer-title {
  font-size: 17px;
  font-weight: 700;
  color: #0B2D4A;
  line-height: 1.4;
  margin-bottom: 16px;
  text-align: left;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.footer-links a {
  color: #48627A;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.8;
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: #0B2D4A;
  font-weight: 700;
}

.footer-bottom {
  border-top: 1px solid #D4DCE4;
  padding-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: #6E8193;
  font-size: 13px;
  font-weight: 400;
}

@media (max-width: 768px) {
  .contact-full-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    align-items: initial;
  }
  .contact-full-cards {
    height: auto;
    justify-content: initial;
    gap: 16px;
  }
  .contact-right-column {
    height: auto;
    gap: 16px;
  }
  .contact-map-card {
    flex: initial;
    justify-content: initial;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: start;
  }
  .footer-info {
    text-align: left;
  }
  .footer .footer-logo-img,
  footer .footer-logo-img {
    width: 140px !important;
    max-width: 140px !important;
    margin: 0 0 14px 0 !important;
  }
  .footer-company-info {
    font-size: 13.5px;
    margin: 0 !important;
    text-align: left !important;
  }
  .footer-info-line {
    font-size: 13.5px !important;
    white-space: normal;
  }
  .footer-title,
  .footer-links {
    text-align: left;
  }
}

/* ==========================================================================
   UI/UX Enhancement: Scroll Reveal & Micro-Interactions
   ========================================================================== */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* Enhanced Micro-Interactions & Hover Polish */
.service-card {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(7, 27, 43, 0.1);
  border-color: rgba(16, 42, 67, 0.25);
}

.process-step {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.process-step:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 28px rgba(7, 27, 43, 0.08);
}

.process-step-num {
  transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.process-step:hover .process-step-num {
  transform: scale(1.08);
  background-color: var(--primary-navy);
  color: #ffffff;
}

.infra-column {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.infra-column:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.25);
  border-color: rgba(184, 170, 160, 0.4);
}

/* Accessibility Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--primary-navy);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Mobile Extra Small Screens Polish (360px ~ 480px) */
@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.3;
  }
  .hero-description {
    font-size: 0.925rem;
    line-height: 1.6;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-btn {
    width: 100%;
    justify-content: center;
  }
  .section-title {
    font-size: 1.65rem;
  }
}

/* ==========================================================================
   Floating Quick Quote Card (Smooth Follow Engine, Zero Impact on Container Width)
   ========================================================================== */
.cases-floating-quote {
  position: absolute;
  top: 0;
  left: 0;
  width: 250px;
  z-index: 95;
  will-change: transform;
  pointer-events: auto;
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans KR', sans-serif !important;
}

@media (max-width: 1479px) {
  .cases-floating-quote {
    display: none !important; /* Never shrink main content! Hide float on screens without side margin */
  }
}

.sticky-quote-card,
.sticky-quote-card input,
.sticky-quote-card textarea,
.sticky-quote-card button,
.sticky-quote-card label {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans KR', sans-serif !important;
}

.sticky-quote-card {
  background: var(--bg-white);
  border: 1px solid var(--border-gray);
  border-top: 3px solid var(--primary-navy);
  border-radius: var(--radius-md);
  padding: 13px 14px;
  box-shadow: 0 4px 18px rgba(7, 27, 43, 0.10);
}

.sticky-card-header {
  margin-bottom: 9px;
  padding-bottom: 7px;
  border-bottom: 1px solid #edf2f7;
}

.sticky-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary-navy);
  line-height: 1.2;
  margin-bottom: 2px;
}

.sticky-card-sub {
  font-size: 0.735rem;
  color: var(--secondary-gray);
  line-height: 1.3;
}

.sticky-form-group {
  margin-bottom: 8px;
}

.sticky-form-label {
  display: block;
  font-size: 0.775rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 3px;
}

.sticky-form-label span {
  color: #dc2626;
}

.sticky-form-control {
  width: 100%;
  padding: 5px 8px;
  font-size: 0.785rem;
  border: 1px solid var(--border-gray);
  border-radius: var(--radius-sm);
  background-color: var(--bg-white);
  color: var(--text-black);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sticky-form-control:focus {
  outline: none;
  border-color: var(--primary-navy);
  box-shadow: 0 0 0 2px rgba(16, 42, 67, 0.1);
}

.sticky-textarea {
  resize: vertical;
  min-height: 48px;
  max-height: 80px;
}

.sticky-textarea::placeholder,
.sticky-form-control::placeholder {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans KR', sans-serif !important;
  font-size: 0.7rem !important;
  color: #9ca3af;
  line-height: 1.35;
}

.sticky-checkbox-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px 4px;
  padding: 4px;
  border: 1px solid #edf2f7;
  border-radius: var(--radius-sm);
  background-color: #fafbfc;
}

.sticky-checkbox-item {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  font-size: 0.715rem;
  color: var(--text-black);
  cursor: pointer;
  padding: 3px 4px;
  border-radius: 3px;
  user-select: none;
  transition: background-color 0.15s ease;
  white-space: normal;
  word-break: keep-all;
  line-height: 1.25;
}

.sticky-checkbox-item:hover {
  background-color: #eef2f6;
}

.sticky-checkbox-item input[type="checkbox"] {
  accent-color: var(--primary-navy);
  width: 12px;
  height: 12px;
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
}

.sticky-error-msg {
  font-size: 0.7rem;
  color: #dc2626;
  margin-top: 2px;
  line-height: 1.2;
}

.btn-sticky-quote {
  width: 100%;
  background-color: var(--primary-navy);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-top: 4px;
}

.btn-sticky-quote:hover {
  background-color: var(--primary-navy-hover);
  transform: translateY(-1px);
}

/* ==========================================================================
   HEADER SUBTITLE RESPONSIVE VISIBILITY (Desktop Only: > 1200px)
   Hide .logo-sub on Tablet and Mobile
   ========================================================================== */
@media (max-width: 1200px) {
  .logo-sub {
    display: none !important;
  }
}

/* ==========================================================================
   TABLET RESPONSIVE SYSTEM (769px ~ 1024px)
   About ELAB Image Natural Aspect Ratio Correction
   ========================================================================== */
@media (min-width: 769px) and (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr !important;
    gap: 36px !important;
  }

  .about-image-wrapper {
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    aspect-ratio: auto !important;
    position: relative !important;
    overflow: hidden !important;
    align-self: initial !important;
  }

  .about-image-wrapper .about-img,
  .about-img {
    position: static !important;
    width: 100% !important;
    height: auto !important;
    object-fit: contain !important;
    object-position: center !important;
    display: block !important;
  }
}

/* ==========================================================================
   COMPLETE MOBILE RESPONSIVE SYSTEM (@media (max-width: 768px))
   Target viewports: 360px, 390px, 412px, 430px, 768px
   Refined Mobile Typography System & Compact Layout Hierarchy
   ========================================================================== */
@media (max-width: 768px) {
  * {
    box-sizing: border-box;
  }

  html, body {
    overflow-x: hidden;
    width: 100%;
  }

  img {
    max-width: 100%;
    height: auto;
  }

  .container {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 16px !important;
    padding-right: 16px !important;
    box-sizing: border-box !important;
  }

  /* --------------------------------------------------------------------------
     1. Mobile Typography Base Rules (Korean Natural Phrase Wrapping)
     -------------------------------------------------------------------------- */
  p, h1, h2, h3, h4, h5, h6,
  .section-title, .section-desc,
  .hero-title, .hero-highlight, .hero-description,
  .about-title, .about-text-content,
  .service-title, .service-desc, .service-detail-item,
  .infra-column-title, .infra-col-content, .infra-col-desc,
  .cases-category-title, .cases-category-desc,
  .tech-panel-main-title, .tech-panel-title, .tech-panel-sub, .tech-panel-desc-item,
  .contact-card-value, .contact-card-sub, .map-address-text {
    word-break: keep-all;
    overflow-wrap: break-word;
    white-space: normal;
  }

  /* Responsive <br> Suppression for Desktop Line Breaks */
  .hero-description br,
  .hero-highlight br,
  .section-title br,
  .section-desc br,
  .about-title br,
  .about-text-content br,
  .cases-category-title br,
  .cases-category-desc br,
  .tech-panel-main-title br,
  .tech-panel-title br,
  .tech-panel-desc-item br,
  .service-title br,
  .service-desc br,
  .infra-column-title br,
  .infra-col-content br,
  .infra-col-desc br,
  .process-step-desc br {
    display: none !important;
  }

  /* English Eyebrow & Category Labels (11px, letter-spacing: 0.06em) */
  .section-tag,
  .page-banner-tag,
  .infra-col-label,
  .tech-panel-tag,
  .map-notice-tag {
    font-size: 11px !important;
    line-height: 1.2 !important;
    letter-spacing: 0.06em !important;
    text-transform: uppercase !important;
  }

  /* Main Section Titles (24px, line-height 1.35) */
  .section-title,
  .about .section-title,
  .cta-banner-title {
    font-size: 24px !important;
    line-height: 1.35 !important;
    letter-spacing: -0.3px !important;
    margin-bottom: 10px !important;
  }

  /* Section Descriptions (14px, line-height 1.7) */
  .section-desc,
  .cta-banner-desc {
    font-size: 14px !important;
    line-height: 1.7 !important;
  }

  /* Card Titles & Sub-headings (18px, line-height 1.4) */
  .service-title,
  .infra-column-title,
  .case-title,
  .tech-panel-title,
  .map-title {
    font-size: 18px !important;
    line-height: 1.4 !important;
  }

  /* Buttons Typography & Touch Targets (14px, height 48px-52px) */
  .btn,
  .hero-btn,
  .tech-panel-btn,
  .header-cta {
    font-size: 14px !important;
    font-weight: 700 !important;
  }

  /* --------------------------------------------------------------------------
     2. Header & Navigation Drawer
     -------------------------------------------------------------------------- */
  .header {
    height: 64px;
  }

  .header-container {
    height: 64px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 8px !important;
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  .logo {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    flex: 1 1 auto !important;
    min-width: 0 !important;
  }

  .logo-img {
    width: clamp(120px, 34vw, 138px) !important;
    height: auto !important;
    max-height: 36px !important;
    flex-shrink: 0 !important;
  }

  .logo-sub {
    font-size: clamp(0.7rem, 2.3vw, 0.825rem) !important;
    font-weight: 600 !important;
    color: var(--primary-navy) !important;
    border-left: 1px solid var(--border-gray) !important;
    padding-left: 8px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    flex-shrink: 1 !important;
    min-width: 0 !important;
  }

  .nav-menu,
  .header-cta {
    display: none !important;
  }

  .mobile-nav-toggle {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: none !important;
    border: none !important;
    color: var(--primary-navy) !important;
    cursor: pointer !important;
    padding: 6px !important;
    flex-shrink: 0 !important;
    margin-left: auto !important;
  }

  .mobile-nav-drawer {
    width: min(86vw, 340px) !important;
    right: -360px !important;
    padding: 22px 24px !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    box-sizing: border-box !important;
  }

  .mobile-nav-drawer.active {
    right: 0 !important;
  }

  .mobile-drawer-header {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding-bottom: 16px !important;
    border-bottom: 1px solid var(--border-gray) !important;
    margin-bottom: 24px !important;
  }

  .mobile-drawer-header .logo-sub {
    display: none !important;
  }

  .mobile-drawer-header .logo-img {
    width: 125px !important;
    height: auto !important;
  }

  .close-drawer-btn {
    font-size: 1.4rem !important;
    color: var(--text-black) !important;
    padding: 6px !important;
    background: none !important;
    border: none !important;
    cursor: pointer !important;
  }

  .mobile-nav-links {
    gap: 16px !important;
  }

  .mobile-nav-link {
    font-size: 1rem !important;
    font-weight: 700 !important;
    padding: 8px 0 !important;
  }

  /* --------------------------------------------------------------------------
     3. Hero Section (28px Title, 15px Highlight, 14px Body, 12px Features)
     -------------------------------------------------------------------------- */
  .hero {
    padding: 80px 0 28px !important;
  }

  .hero-visual-container {
    position: absolute !important;
    top: 0 !important;
    right: 0 !important;
    width: 100% !important;
    height: 100% !important;
    opacity: 0.18 !important;
    pointer-events: none !important;
  }

  .hero-container-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .hero-title {
    font-size: clamp(28px, 6.8vw, 30px) !important;
    line-height: 1.28 !important;
    margin-bottom: 14px !important;
    letter-spacing: -0.5px !important;
  }

  .hero-title span {
    display: block !important;
    margin-top: 4px !important;
    color: #79A7D9 !important;
  }

  .hero-highlight {
    font-size: 15px !important;
    line-height: 1.6 !important;
    margin-bottom: 16px !important;
    border-left: 2px solid #5A82B8 !important;
    padding-left: 12px !important;
  }

  .hero-description {
    font-size: 14px !important;
    line-height: 1.7 !important;
    color: #94A3B8 !important;
    margin-bottom: 12px !important;
  }

  /* Hero 3 Feature Items Row (12px text, 24px icon) */
  .hero-features-row {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 0 !important;
    width: 100% !important;
    margin-top: 20px !important;
    margin-bottom: 18px !important;
    align-items: center !important;
  }

  .hero-feature-divider {
    display: none !important;
  }

  .hero-feature-item {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    padding: 0 4px !important;
    border-right: 1px solid rgba(255, 255, 255, 0.15) !important;
  }

  .hero-feature-item:last-child {
    border-right: none !important;
  }

  .hero-feature-icon {
    width: 24px !important;
    height: 24px !important;
    margin-bottom: 5px !important;
  }

  .hero-feature-text {
    font-size: 12px !important;
    font-weight: 600 !important;
    line-height: 1.4 !important;
    text-align: center !important;
    white-space: normal !important;
    word-break: keep-all !important;
  }

  .hero-feature-text br {
    display: block !important;
  }

  /* Hero CTA Buttons */
  .hero-actions {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    gap: 10px !important;
    margin-top: 20px !important;
  }

  .hero-btn {
    width: 100% !important;
    min-height: 48px !important;
    font-size: 14px !important;
    justify-content: center !important;
    border-radius: 5px !important;
  }

  /* Hero Image Cards */
  .hero-cards-wrapper {
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
    width: 100% !important;
    margin-top: 20px !important;
    max-width: 100% !important;
  }

  .hero-card-item {
    width: 100% !important;
  }

  .hero-card-img-box {
    width: 100% !important;
    aspect-ratio: 16 / 9 !important;
    height: auto !important;
    max-height: 165px !important;
  }

  .hero-card-label {
    padding: 7px 8px !important;
    font-size: 13px !important;
  }

  /* Hero Ticker Strip (Compact 2-Line Layout: 10px, letter-spacing: 0.10em) */
  .hero-ticker-container {
    margin-top: 28px !important;
    padding-top: 14px !important;
  }

  .hero-ticker-text {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    font-size: 10px !important;
    letter-spacing: 0.10em !important;
    line-height: 1.4 !important;
    text-align: center !important;
  }

  .hero-ticker-text .ticker-tech {
    color: rgba(145, 165, 195, 0.65) !important;
    font-weight: 700 !important;
    white-space: nowrap !important;
  }

  .hero-ticker-text .ticker-brand-group {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 16px !important;
  }

  .hero-ticker-text .ticker-slogan {
    color: rgba(170, 170, 175, 0.7) !important;
    font-weight: 700 !important;
  }

  .hero-ticker-text .ticker-brand {
    color: rgba(180, 160, 150, 0.8) !important;
    font-weight: 800 !important;
  }

  /* --------------------------------------------------------------------------
     4. Analysis Process Section
     -------------------------------------------------------------------------- */
  .process {
    padding: 44px 0 !important;
  }

  .process-steps {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
    margin-top: 20px !important;
  }

  .process-steps::before {
    display: none !important;
  }

  .process-step {
    padding: 14px 16px !important;
    background: var(--bg-white) !important;
    border: 1px solid var(--border-gray) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: 0 2px 6px rgba(7, 27, 43, 0.04) !important;
  }

  .process-step-num {
    margin-bottom: 6px !important;
    width: 34px !important;
    height: 34px !important;
    font-size: 0.875rem !important;
  }

  .process-step-title {
    font-size: 15px !important;
    margin-bottom: 4px !important;
  }

  .process-step-desc {
    font-size: 13px !important;
    line-height: 1.55 !important;
    max-width: 100% !important;
  }

  /* --------------------------------------------------------------------------
     5. About ELAB (24px Title, 14px Body)
     -------------------------------------------------------------------------- */
  .about {
    padding: 48px 0 !important;
  }

  .about-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
  }

  .about-image-wrapper {
    height: auto !important;
    aspect-ratio: 16 / 10 !important;
    min-height: 0 !important;
    position: relative !important;
    width: 100% !important;
  }

  .about-image-wrapper .about-img,
  .about-img {
    position: static !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
  }

  .about-text-content {
    font-size: 14px !important;
    line-height: 1.75 !important;
  }

  /* --------------------------------------------------------------------------
     6. Analysis Services (18px Card Title, 14px Card Body, 14px Accordion Label)
     -------------------------------------------------------------------------- */
  .services {
    padding: 48px 0 !important;
  }

  .services-grid {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
    margin-top: 24px !important;
  }

  .service-card {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    height: auto !important;
    padding: 20px 16px !important;
    box-sizing: border-box !important;
  }

  .service-card * {
    min-width: 0 !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .service-title {
    font-size: 18px !important;
    line-height: 1.4 !important;
    margin-bottom: 8px !important;
  }

  .service-desc {
    font-size: 14px !important;
    line-height: 1.65 !important;
    min-height: 0 !important;
    white-space: normal !important;
    word-break: keep-all !important;
    overflow-wrap: break-word !important;
  }

  .service-accordion-btn {
    width: 100% !important;
    margin-top: 14px !important;
    padding: 9px 12px !important;
    font-size: 14px !important;
  }

  .service-accordion-inner {
    min-height: 0 !important;
    padding-top: 10px !important;
    gap: 6px !important;
  }

  .service-detail-item {
    font-size: 13px !important;
    line-height: 1.55 !important;
  }

  /* --------------------------------------------------------------------------
     7. Analysis Infrastructure (11px Eyebrow, 24px Title, 18px Subtitle, 14px Desc)
     -------------------------------------------------------------------------- */
  .infrastructure {
    padding: 48px 0 !important;
  }

  .infra-open-grid {
    grid-template-columns: 1fr !important;
    gap: 0 !important;
    margin-top: 20px !important;
  }

  .infra-column {
    padding: 16px 0 !important;
    border-right: none !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12) !important;
  }

  .infra-column:first-child {
    padding-top: 0 !important;
  }

  .infra-column:last-child {
    padding-bottom: 0 !important;
    border-bottom: none !important;
  }

  .infra-col-label {
    font-size: 11px !important;
    line-height: 1.2 !important;
    letter-spacing: 0.06em !important;
  }

  .infra-column-title {
    font-size: 18px !important;
    line-height: 1.4 !important;
  }

  .infra-col-content {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }

  .infra-col-desc {
    font-size: 13px !important;
    line-height: 1.6 !important;
  }

  /* --------------------------------------------------------------------------
     8. Case Studies Page (24-26px Banner, 22px Sec Heading, 18px Card Title)
     -------------------------------------------------------------------------- */
  .page-banner {
    padding: 88px 0 30px !important;
    min-height: 0 !important;
  }

  .page-banner-title {
    font-size: clamp(24px, 5.8vw, 26px) !important;
    line-height: 1.3 !important;
  }

  .page-banner-desc {
    font-size: 14px !important;
    line-height: 1.65 !important;
  }

  .cases-category-nav {
    top: 64px !important;
    z-index: 900 !important;
  }

  .cases-category-container {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    touch-action: pan-x pan-y !important;
    gap: 6px !important;
    padding: 8px 16px !important;
    scrollbar-width: none !important;
  }

  .cases-category-container::-webkit-scrollbar {
    display: none !important;
  }

  .cases-tab-btn {
    flex: 0 0 auto !important;
    white-space: nowrap !important;
    font-size: 13px !important;
    padding: 7px 10px 9px !important;
  }

  .cases-tab-btn.active {
    font-size: 13.5px !important;
    font-weight: 800 !important;
  }

  .cases-category-sec {
    padding: 32px 0 !important;
    scroll-margin-top: calc(64px + 44px + 10px) !important;
  }

  .cases-category-title {
    font-size: 22px !important;
    line-height: 1.35 !important;
  }

  .cases-category-desc {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }

  .tech-case-panel {
    padding: 12px 14px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .tech-panel-main-title {
    font-size: 20px !important;
    line-height: 1.35 !important;
  }

  .tech-panel-desc-item {
    font-size: 13px !important;
    line-height: 1.55 !important;
  }

  .tech-panel-title {
    font-size: 18px !important;
    line-height: 1.4 !important;
  }

  .tech-panel-sub {
    font-size: 13px !important;
    line-height: 1.5 !important;
  }

  .tech-panel-macro-row,
  .tech-panel-ingot-row,
  .tech-panel-damage-row1,
  .tech-panel-damage-row2,
  .tech-panel-weld-row,
  .tech-panel-replica-row,
  .tech-panel-sem-row1,
  .tech-panel-sem-row2,
  .tech-panel-flowline-row,
  .tech-panel-epma-row {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }

  .tech-panel-item {
    height: auto !important;
    padding: 10px 12px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .tech-panel-img-box {
    width: 100% !important;
    height: auto !important;
  }

  .tech-panel-img-box img {
    width: 100% !important;
    height: auto !important;
    max-height: none !important;
    object-fit: contain !important;
  }

  .case-title {
    font-size: 18px !important;
    line-height: 1.4 !important;
  }

  .case-list-item {
    font-size: 13px !important;
    line-height: 1.55 !important;
  }

  /* --------------------------------------------------------------------------
     9. Contact Page (24px Title, 14px Desc, 12-13px Label, 17-18px Value)
     -------------------------------------------------------------------------- */
  .contact-full {
    padding: 44px 0 !important;
  }

  .contact-full-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
    margin-top: 28px !important;
  }

  .contact-card {
    padding: 14px 16px !important;
    gap: 12px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .contact-card-icon {
    width: 42px !important;
    height: 42px !important;
    min-width: 42px !important;
  }

  .contact-card-title {
    font-size: 12px !important;
    line-height: 1.3 !important;
  }

  .contact-card-value {
    font-size: 17px !important;
    line-height: 1.4 !important;
  }

  .contact-card-sub {
    font-size: 13px !important;
    line-height: 1.5 !important;
  }

  .map-card-box {
    padding: 20px 16px !important;
  }

  .map-title {
    font-size: 18px !important;
    line-height: 1.4 !important;
  }

  .map-address-text {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }

  /* --------------------------------------------------------------------------
     10. Estimate Page (24px Title, 14px Form Labels & Body)
     -------------------------------------------------------------------------- */
  .estimate {
    padding: 44px 0 !important;
  }

  .estimate-card {
    padding: 18px 14px !important;
    margin-top: 20px !important;
  }

  .form-grid {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  .form-label {
    font-size: 13.5px !important;
  }

  .form-control {
    font-size: 14px !important;
    padding: 10px 12px !important;
  }

  .checkbox-group {
    grid-template-columns: 1fr 1fr !important;
    gap: 8px !important;
  }

  .checkbox-label {
    font-size: 13px !important;
    padding: 8px 10px !important;
  }

  .estimate-notice-box {
    font-size: 13px !important;
    line-height: 1.6 !important;
    padding: 12px 14px !important;
  }

  /* --------------------------------------------------------------------------
     11. Footer (14px Column Headers, 13px Links, 12px Bottom Text)
     -------------------------------------------------------------------------- */
  .footer {
    padding: 36px 0 20px !important;
  }

  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    margin-bottom: 24px !important;
  }

  .footer-title {
    font-size: 14px !important;
    margin-bottom: 10px !important;
  }

  .footer-links a,
  .footer-company-info {
    font-size: 13px !important;
    line-height: 1.6 !important;
  }

  .footer-bottom {
    flex-direction: column !important;
    gap: 6px !important;
    text-align: center !important;
    align-items: center !important;
    font-size: 12px !important;
  }
}

/* Sub-breakpoint fine-tuning for ultra-narrow screens (360px ~ 380px) */
@media (max-width: 380px) {
  .hero-title {
    font-size: 26px !important;
  }
  .logo-sub {
    font-size: 0.68rem !important;
  }
  .hero-feature-text {
    font-size: 11px !important;
  }
  .hero-ticker-text {
    font-size: 9.5px !important;
    letter-spacing: 0.06em !important;
  }
  .checkbox-group {
    grid-template-columns: 1fr !important;
  }
}