/* =========================================================
   (주)워터원기술 공식 웹사이트 스타일시트
   Light Corporate Theme (엔터프라이즈 라이트 테마)
   Smart Water & Infrastructure 3D BIM Engineering
   ========================================================= */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  /* Core Brand Colors */
  --primary-navy: #0a192f;      /* Deep Enterprise Navy */
  --primary-navy-dark: #050d1a;
  --primary-blue: #0284c7;      /* Ocean / Water Blue */
  --primary-sky: #0ea5e9;       /* Vibrant Sky Accent */
  --primary-light: #38bdf8;
  --accent-cyan: #06b6d4;
  
  /* Light Theme Surfaces */
  --bg-white: #ffffff;
  --bg-slate-50: #f8fafc;
  --bg-slate-100: #f1f5f9;
  --bg-slate-200: #e2e8f0;
  
  /* Text Hierarchy */
  --text-dark: #0f172a;         /* Main Headings */
  --text-body: #334155;         /* Paragraph / Body */
  --text-muted: #64748b;        /* Subtitles / Labels */
  --text-light: #94a3b8;
  
  /* Borders & Dividers */
  --border-light: #e2e8f0;
  --border-subtle: #edf2f7;
  --border-blue: rgba(2, 132, 199, 0.25);
  
  /* Shadows */
  --shadow-subtle: 0 2px 10px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 4px 20px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-hover: 0 12px 30px rgba(15, 23, 42, 0.1), 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-navy: 0 10px 30px rgba(10, 25, 47, 0.25);

  /* Typography */
  --font-base: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  --font-heading: 'Plus Jakarta Sans', 'Pretendard', sans-serif;
  --font-eng: 'Outfit', sans-serif;

  /* Dimensions */
  --container-max: 1240px;
  --container-wide: 1360px;
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-base);
  color: var(--text-body);
  background-color: var(--bg-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

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

.section-slate {
  background-color: var(--bg-slate-50);
}

/* Corporate Section Headers */
.section-header {
  margin-bottom: 50px;
}

.section-header.text-left {
  text-align: left;
}

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

.section-category {
  display: inline-block;
  font-family: var(--font-eng);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary-blue);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.03em;
  line-height: 1.3;
  margin-bottom: 14px;
  word-break: keep-all;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 760px;
  word-break: keep-all;
}

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

/* =========================================================
   Header (GNB) - White Corporate Style
   ========================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 8px rgba(15, 23, 42, 0.03);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
}

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

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

.header-logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-item {
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--text-dark);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: width var(--transition-normal);
}

.nav-item:hover, .nav-item.active {
  color: var(--primary-blue);
}

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

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

/* General Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 0.925rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn-header-cta {
  background: var(--primary-navy);
  color: #ffffff;
  padding: 10px 22px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(10, 25, 47, 0.15);
}

.btn-header-cta:hover {
  background: #1e3a6a;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(10, 25, 47, 0.25);
}

.btn-primary {
  background: var(--primary-navy);
  color: #ffffff;
}

.btn-primary:hover {
  background: #152e52;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-blue {
  background: var(--primary-blue);
  color: #ffffff;
}

.btn-blue:hover {
  background: #0369a1;
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline {
  background: #ffffff;
  color: var(--text-dark);
  border: 1px solid var(--border-light);
}

.btn-outline:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background: #f8fafc;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-dark);
  font-size: 1.5rem;
  cursor: pointer;
}

/* =========================================================
   Hero Section - Dark Cinematic Accent (Matches Mockup)
   ========================================================= */
.hero-section {
  min-height: 92vh;
  position: relative;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 50px) 0 70px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6, 17, 36, 0.94) 0%, rgba(8, 24, 48, 0.88) 50%, rgba(10, 30, 60, 0.93) 100%),
              radial-gradient(circle at 80% 20%, rgba(14, 116, 144, 0.25) 0%, transparent 55%);
  z-index: 1;
}

.hero-container-custom {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 40px;
}

.hero-badge-group {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(14, 116, 144, 0.4);
  border: 1px solid rgba(56, 189, 248, 0.55);
  padding: 8px 18px;
  border-radius: 6px;
  font-family: var(--font-eng);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #38bdf8;
  backdrop-filter: blur(8px);
}

.hero-badge-pill .pulse-dot {
  width: 7px;
  height: 7px;
  background-color: #38bdf8;
  border-radius: 50%;
  box-shadow: 0 0 10px #38bdf8;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

.hero-badge-meta {
  font-family: var(--font-eng);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #94a3b8;
}

.hero-title-main-custom {
  font-size: clamp(2.8rem, 4.6vw, 4.2rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.22;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
  word-break: keep-all;
  max-width: 1100px;
}

.hero-subtitle-custom {
  font-size: clamp(1.15rem, 1.8vw, 1.38rem);
  font-weight: 600;
  color: #cbd5e1;
  margin-bottom: 44px;
  letter-spacing: -0.015em;
  word-break: keep-all;
}

.hero-subtitle-custom strong {
  color: #ffffff;
  font-weight: 700;
}

.hero-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 44px;
  width: 100%;
  max-width: 1320px;
}

.hero-feature-card {
  background: rgba(12, 26, 50, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  padding: 26px 28px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.hero-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.5);
  background: rgba(16, 36, 68, 0.92);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.feature-card-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-eng);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #38bdf8;
  margin-bottom: 14px;
}

.hero-feature-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  word-break: keep-all;
}

.hero-feature-card p {
  font-size: 0.92rem;
  color: #94a3b8;
  line-height: 1.6;
  margin: 0;
  word-break: keep-all;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.btn-hero-request {
  background: #38bdf8;
  color: #031327;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 15px 32px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.4);
  border: none;
  cursor: pointer;
}

.btn-hero-request:hover {
  background: #7dd3fc;
  color: #020b16;
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(56, 189, 248, 0.55);
}

.btn-hero-brochure {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #ffffff;
  font-weight: 600;
  font-size: 1.05rem;
  padding: 15px 28px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-hero-brochure:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
  color: #ffffff;
}

/* =========================================================
   Section 1: About Us & Vision (회사소개 및 비전)
   ========================================================= */
.about-grid-main {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 32px;
}

/* Row 1: CEO Greetings Card */
.about-card-left {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 42px 46px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.about-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-blue);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 18px;
  background: #f0f9ff;
  padding: 6px 14px;
  border-radius: 6px;
  align-self: flex-start;
}

.about-quote {
  font-size: 1.38rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.55;
  margin-bottom: 22px;
  word-break: keep-all;
  letter-spacing: -0.02em;
}

.ceo-message-content {
  margin-bottom: 20px;
}

.ceo-message-p {
  font-size: 0.98rem;
  color: var(--text-body);
  line-height: 1.82;
  margin-bottom: 14px;
  word-break: keep-all;
}

.ceo-message-p strong {
  color: var(--text-dark);
}

.ceo-commitments {
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-top: 3px solid var(--primary-blue);
  border-radius: 12px;
  padding: 22px 24px;
  margin: 22px 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ceo-commit-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.commit-num {
  background: rgba(2, 132, 199, 0.12);
  color: var(--primary-blue);
  font-family: var(--font-eng);
  font-weight: 800;
  font-size: 0.82rem;
  padding: 3px 9px;
  border-radius: 6px;
  line-height: 1.3;
  margin-top: 2px;
  flex-shrink: 0;
  letter-spacing: 0.05em;
}

.commit-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.commit-text strong {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--text-dark);
}

.commit-text span {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.55;
  word-break: keep-all;
}

.ceo-message-closing {
  font-size: 0.96rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-top: 14px;
  margin-bottom: 6px;
  word-break: keep-all;
}

.ceo-message-closing strong {
  color: var(--text-dark);
}

.about-author-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.about-author-row strong {
  color: var(--text-dark);
  font-size: 1.02rem;
  font-weight: 700;
}

/* Row 2: Light Corporate Synergy Architecture Card */
.about-card-synergy {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 36px 46px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.synergy-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid #f1f5f9;
  flex-wrap: wrap;
  gap: 12px;
}

.synergy-header-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.synergy-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-eng);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary-blue);
  background: #f0f9ff;
  padding: 4px 12px;
  border-radius: 6px;
  align-self: flex-start;
}

.synergy-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.02em;
}

.synergy-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Synergy Horizontal Flow (Hansu + Basis = WaterOne) */
.synergy-flow-container {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.synergy-box {
  flex: 1;
  min-width: 0;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.synergy-box:hover {
  background: #ffffff;
  border-color: var(--border-blue);
  box-shadow: var(--shadow-subtle);
  transform: translateY(-2px);
}

.synergy-box-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 10px;
}

.synergy-box-logo-wrap {
  height: 32px;
  display: flex;
  align-items: center;
}

.synergy-box-logo {
  max-height: 28px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
}

.synergy-box-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-blue);
  background: #e0f2fe;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.synergy-box-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.synergy-box-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.6;
  word-break: keep-all;
  flex-grow: 1;
}

.synergy-box.result-box {
  flex: 1.1;
  background: #f0f9ff;
  border: 1.5px solid rgba(2, 132, 199, 0.4);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.08);
}

.synergy-box.result-box:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.15);
}

.synergy-box.result-box .synergy-box-badge {
  background: var(--primary-blue);
  color: #ffffff;
}

.synergy-box.result-box .synergy-box-title {
  color: #0369a1;
}

/* Synergy Dividers */
.synergy-flow-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 0 2px;
}

.divider-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #f1f5f9;
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--primary-blue);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.synergy-badge-bottom {
  background: #e0f2fe;
  border: 1px solid rgba(2, 132, 199, 0.25);
  padding: 12px 20px;
  border-radius: 8px;
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: #0369a1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Wide CI & Capability Card */
.about-card-wide {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 36px 40px;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 36px;
  align-items: stretch;
}

.ci-visual-side {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px 24px;
  background: var(--bg-slate-50);
  border-radius: 14px;
  border: 1px solid var(--border-light);
}

.ci-logo-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 16px;
}

.ci-main-logo {
  max-height: 46px;
  width: auto;
  margin-bottom: 10px;
}

.ci-badge-pill {
  display: inline-block;
  font-family: var(--font-eng);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary-blue);
  background: #e0f2fe;
  padding: 3px 11px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.ci-slogan-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0;
  word-break: keep-all;
  line-height: 1.45;
}

.ci-meaning-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ci-meaning-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #ffffff;
  padding: 13px 15px;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.ci-meaning-item:hover {
  border-color: var(--border-blue);
  box-shadow: var(--shadow-subtle);
}

.ci-icon-tag {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.88rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.ci-icon-tag.tag-blue {
  background: #e0f2fe;
  color: var(--primary-blue);
}

.ci-icon-tag.tag-cyan {
  background: #ecfeff;
  color: #0891b2;
}

.ci-icon-tag.tag-red {
  background: #fee2e2;
  color: #dc2626;
}

.ci-meaning-text {
  flex: 1;
  min-width: 0;
}

.ci-meaning-text strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 3px;
}

.ci-meaning-text p {
  font-size: 0.835rem;
  color: var(--text-body);
  line-height: 1.58;
  margin: 0;
  word-break: keep-all;
}

.ci-meaning-text p strong {
  display: inline;
  color: var(--text-dark);
}

.ci-color-chips {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 4px;
}

.color-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.color-chip strong {
  color: var(--text-dark);
  font-size: 0.83rem;
  margin-bottom: 0;
  display: inline;
}

.chip-circle {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.ci-content-side {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.ci-content-side h4 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.ci-content-side p {
  font-size: 0.94rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 18px;
}

.ci-check-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* Digital Transformation Target Banner (Fills bottom right void) */
.ci-target-banner {
  margin-top: 18px;
  background: linear-gradient(135deg, #f0fdf4 0%, #f0f9ff 100%);
  border: 1px solid rgba(2, 132, 199, 0.22);
  border-left: 4px solid var(--primary-blue);
  border-radius: 12px;
  padding: 15px 18px;
}

.target-banner-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 6px;
}

.target-banner-badge {
  font-family: var(--font-eng);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary-blue);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.target-banner-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

.target-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.target-metric-box {
  background: #ffffff;
  border: 1px solid rgba(2, 132, 199, 0.16);
  border-radius: 8px;
  padding: 10px 8px;
  text-align: center;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.03);
}

.target-metric-box .metric-val {
  font-family: var(--font-eng);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1.2;
  margin-bottom: 2px;
}

.target-metric-box .metric-lbl {
  font-size: 0.75rem;
  color: var(--text-body);
  font-weight: 600;
  line-height: 1.35;
  word-break: keep-all;
}

.ci-check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 12px 14px;
}

.ci-check-item i {
  color: var(--primary-blue);
  margin-top: 3px;
}

.ci-check-item strong {
  font-size: 0.9rem;
  color: var(--text-dark);
  display: block;
  margin-bottom: 2px;
}

.ci-check-item span {
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* =========================================================
   Section 2: Location & Contact Bar (찾아오시는 길 & 사업 거점)
   ========================================================= */
.location-top-bar {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 18px 36px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-bottom: 28px;
  box-shadow: var(--shadow-subtle);
  flex-wrap: wrap;
  gap: 20px;
}

.loc-bar-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.loc-bar-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #f0f9ff;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.loc-bar-text span {
  display: block;
  font-size: 0.775rem;
  color: var(--text-muted);
}

.loc-bar-text strong {
  font-size: 1.05rem;
  color: var(--text-dark);
}

.location-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.location-card-white {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 34px 32px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.location-card-white:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-blue);
}

.location-card-white::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-blue);
}

.loc-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  background: #f0f9ff;
  color: var(--primary-blue);
  margin-bottom: 18px;
}

.location-card-white h4 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
}

.loc-info-list {
  margin-bottom: 24px;
}

.loc-info-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 10px;
  line-height: 1.6;
}

.loc-info-row i {
  color: var(--primary-blue);
  margin-top: 4px;
  width: 18px;
}

.loc-btn-group {
  display: flex;
  gap: 10px;
}

.btn-map {
  flex: 1;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-slate-100);
  color: var(--text-dark);
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.btn-map:hover {
  background: #ffffff;
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  box-shadow: var(--shadow-subtle);
}

/* =========================================================
   Section 3: Engineering Business (엔지니어링 사업분야)
   ========================================================= */
.eng-services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.eng-service-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 30px 24px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.eng-service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-blue);
}

.service-icon-box {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background: #f0f9ff;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}

.eng-service-card h4 {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.service-item-list {
  margin-bottom: 0;
}

.service-item-list li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-item-list li::before {
  content: '•';
  color: var(--primary-blue);
  font-weight: bold;
}

.service-card-btn {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.825rem;
  font-weight: 600;
  text-align: center;
  background: #f8fafc;
  color: var(--primary-blue);
  border: 1px solid var(--border-light);
  display: block;
}

.eng-service-card:hover .service-card-btn {
  background: var(--primary-blue);
  color: #ffffff;
  border-color: var(--primary-blue);
}

/* Deep Navy Synergy CTA Banner */
.synergy-cta-banner {
  background: var(--primary-navy);
  border-radius: 14px;
  padding: 24px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #ffffff;
  box-shadow: var(--shadow-navy);
  flex-wrap: wrap;
  gap: 20px;
}

.banner-text-side {
  display: flex;
  align-items: center;
  gap: 16px;
}

.banner-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.2);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.banner-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}

.banner-desc {
  font-size: 0.875rem;
  color: #94a3b8;
  margin-top: 2px;
}

.btn-banner-action {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-banner-action:hover {
  background: #ffffff;
  color: var(--primary-navy);
  border-color: #ffffff;
}

/* =========================================================
   Section 4: BIM Consulting (BIM 컨설팅 사업분야)
   ========================================================= */
.bim-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.bim-consult-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 34px 28px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bim-consult-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-blue);
}

.bim-card-top {
  margin-bottom: 24px;
}

.bim-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: #f0f9ff;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.bim-consult-card h4 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.bim-consult-card p {
  font-size: 0.925rem;
  color: var(--text-body);
  line-height: 1.65;
}

.bim-feature-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  border-top: 1px solid #f1f5f9;
}

.bim-feature-list li i {
  color: var(--primary-blue);
  font-size: 0.8rem;
}

/* 4-Step Process Box */
.bim-process-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 36px 40px;
  box-shadow: var(--shadow-card);
}

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

.process-header-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-dark);
}

.process-header-tag {
  font-family: var(--font-eng);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-blue);
  background: #f0f9ff;
  padding: 4px 12px;
  border-radius: 4px;
}

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

.process-step-item {
  background: var(--bg-slate-50);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 24px 20px;
  position: relative;
  transition: all var(--transition-normal);
}

.process-step-item:hover {
  background: #ffffff;
  border-color: var(--border-blue);
  box-shadow: var(--shadow-card);
}

.step-num {
  font-family: var(--font-eng);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary-blue);
  margin-bottom: 8px;
  line-height: 1;
}

.step-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* =========================================================
   BIM Showcase & Project Gallery (Option 1)
   ========================================================= */
.bim-showcase-section {
  margin-top: 50px;
}

.gallery-heading {
  margin-bottom: 24px;
}

.gallery-heading h4 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.gallery-heading h4 i {
  color: var(--primary-blue);
}

.gallery-subtext {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.bim-gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.bim-gallery-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.bim-gallery-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-blue);
  box-shadow: 0 10px 24px rgba(2, 132, 199, 0.12);
}

.gallery-img-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #f8fafc;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 10px;
}

.gallery-img-container img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
}

.bim-gallery-card:hover .gallery-img-container img {
  transform: scale(1.05);
}

.gallery-card-body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  background: #ffffff;
}

.gallery-card-tag {
  font-family: var(--font-eng);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--primary-blue);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.gallery-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 6px;
  word-break: keep-all;
}

.gallery-card-desc {
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
  word-break: keep-all;
}

@media (max-width: 1024px) {
  .bim-gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .bim-gallery-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   Section 5: Solutions (제품정보 및 솔루션)
   ========================================================= */
.solutions-brand-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.solution-brand-group {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 18px;
  padding: 36px 40px;
  box-shadow: var(--shadow-card);
}

.brand-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-light);
}

.brand-title-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand-official-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  background: var(--bg-slate-50);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  min-height: 56px;
}

.brand-official-logo img {
  height: 28px;
  width: auto;
  object-fit: contain;
}

.brand-official-logo .bentley-official-img {
  height: 32px;
  max-height: 34px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
  filter: brightness(0);
  opacity: 0.9;
}

.brand-group-header h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-dark);
}

.brand-group-header p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.solution-diagram-card {
  background: var(--bg-slate-50);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 20px;
  box-shadow: var(--shadow-subtle);
}

.solution-diagram-img-wrap {
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid var(--border-light);
}

.solution-diagram-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

.solution-diagram-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 16px;
  margin-top: 16px;
  border-top: 1px solid var(--border-light);
  flex-wrap: wrap;
}

.solution-diagram-desc {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-body);
  flex: 1;
}

.solution-diagram-desc i {
  color: var(--primary-blue);
  font-size: 1.1rem;
}

/* Bentley Water Matrix Card (Clean Theme) */
.bentley-matrix-card {
  background: var(--bg-slate-50);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 28px;
}

.matrix-card-header {
  margin-bottom: 24px;
}

.matrix-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #e0f2fe;
  color: #0369a1;
  border: 1px solid rgba(2, 132, 199, 0.3);
  padding: 5px 14px;
  border-radius: 6px;
  font-family: var(--font-eng);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.matrix-card-header h4 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.matrix-card-header p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.water-matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}

.matrix-column {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 18px 16px;
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.matrix-col-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-light);
}

.col-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.col-potable .col-icon { background: #e0f2fe; color: #0284c7; }
.col-sewer .col-icon { background: #d1fae5; color: #10b981; }
.col-storm .col-icon { background: #cffafe; color: #06b6d4; }
.col-flood .col-icon { background: #ede9fe; color: #8b5cf6; }

.col-title-wrap .col-en {
  display: block;
  font-family: var(--font-eng);
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.col-title-wrap .col-kr {
  font-size: 0.775rem;
  color: var(--text-muted);
}

.stage-tag {
  font-family: var(--font-eng);
  font-size: 0.725rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--primary-blue);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.sw-item-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sw-pill {
  background: var(--bg-slate-50);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 8px 12px;
  transition: all var(--transition-fast);
}

.sw-pill:hover {
  background: #ffffff;
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-subtle);
}

.sw-name {
  font-family: var(--font-eng);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--text-dark);
  display: block;
}

.sw-desc {
  font-size: 0.775rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.matrix-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid var(--border-light);
  gap: 16px;
  flex-wrap: wrap;
}

.matrix-footer-note {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-body);
  flex: 1;
}

.matrix-footer-note i {
  color: var(--primary-blue);
}

/* =========================================================
   Section 6: Contact & Inquiry (고객문의 및 기술상담)
   ========================================================= */
.contact-layout-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 36px;
  align-items: flex-start;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-info-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 24px 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-navy);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.contact-card-text span {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-card-text strong {
  font-size: 1.15rem;
  color: var(--text-dark);
  display: block;
}

.contact-card-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.5;
}

/* Contact Form Card (Full Container Width Balance) */
.contact-form-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 44px 48px;
  box-shadow: var(--shadow-card);
  width: 100%;
}

.form-header-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}

.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px 24px;
  margin-bottom: 20px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-dark);
}

.req-star {
  color: #ef4444;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  color: var(--text-dark);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}

.form-control::placeholder {
  color: var(--text-light);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.checkbox-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 6px;
}

.custom-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-body);
  cursor: pointer;
}

.privacy-check-box {
  background: var(--bg-slate-50);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.btn-trigger-policy {
  background: none;
  border: none;
  color: var(--primary-blue);
  font-size: 0.825rem;
  font-weight: 700;
  text-decoration: underline;
  cursor: pointer;
}

.btn-submit-navy {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-navy);
  color: #ffffff;
  padding: 16px 28px;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(10, 25, 47, 0.2);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-submit-navy:hover {
  background: #142a4d;
  box-shadow: 0 6px 20px rgba(10, 25, 47, 0.3);
  transform: translateY(-2px);
}

/* =========================================================
   Footer (Light Corporate Footer)
   ========================================================= */
.site-footer {
  background-color: var(--bg-slate-100);
  border-top: 1px solid var(--border-light);
  padding: 70px 0 30px;
  color: var(--text-body);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 50px;
}

.footer-brand .footer-logo-img {
  height: 38px;
  width: auto;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-col h5 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 18px;
}

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

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-blue);
}

.footer-family-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.family-btn {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-dark);
  font-size: 0.88rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.family-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  box-shadow: var(--shadow-subtle);
}

.family-btn .btn-partner-logo {
  height: 22px;
  width: auto;
  object-fit: contain;
}

.footer-bottom {
  padding-top: 26px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom strong {
  color: var(--text-dark);
}

.footer-bottom p {
  line-height: 1.6;
}

.footer-legal-links {
  display: flex;
  gap: 16px;
}

.footer-legal-links button {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
}

.footer-legal-links button:hover {
  color: var(--primary-blue);
}

/* =========================================================
   Modals & Toast
   ========================================================= */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.active {
  display: flex;
}

.modal-window {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  max-width: 680px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-hover);
  animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-body {
  padding: 24px 28px;
  overflow-y: auto;
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.7;
}

.modal-body h4 {
  color: var(--text-dark);
  font-size: 1rem;
  margin: 16px 0 6px;
}

.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--primary-navy);
  padding: 16px 24px;
  border-radius: 12px;
  color: #ffffff;
  box-shadow: var(--shadow-navy);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.toast-notice i {
  color: #38bdf8;
  font-size: 1.3rem;
}

/* =========================================================
   Responsive Media Queries
   ========================================================= */
@media (max-width: 1024px) {
  .hero-features-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .about-grid-main {
    flex-direction: column;
    gap: 24px;
  }
  .about-card-left,
  .about-card-synergy {
    padding: 30px 24px;
  }
  .ceo-commitments {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .synergy-flow-container {
    flex-direction: column;
    gap: 10px;
  }
  .synergy-flow-divider {
    transform: rotate(90deg);
    margin: 4px 0;
  }
  .about-card-wide {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .eng-services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bim-cards-grid {
    grid-template-columns: 1fr;
  }
  .process-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .water-matrix-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-layout-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links, .header-actions {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .section {
    padding: 70px 0;
  }
  .section-title {
    font-size: 1.95rem;
  }
  .hero-container-custom {
    padding: 0 20px;
  }
  .hero-title-main-custom {
    font-size: 2.2rem;
  }
  .location-cards-grid {
    grid-template-columns: 1fr;
  }
  .eng-services-grid {
    grid-template-columns: 1fr;
  }
  .process-steps-grid {
    grid-template-columns: 1fr;
  }
  .water-matrix-grid {
    grid-template-columns: 1fr;
  }
  .ci-check-grid {
    grid-template-columns: 1fr;
  }
  .target-metrics-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .form-grid-3 {
    grid-template-columns: 1fr;
  }
  .form-grid-2 {
    grid-template-columns: 1fr;
  }
  .contact-form-card {
    padding: 30px 20px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  /* Section 5: Solutions & Software 모바일 최적화 */
  .solution-brand-group {
    padding: 24px 18px;
    border-radius: 14px;
  }
  .brand-group-header {
    margin-bottom: 18px;
    padding-bottom: 14px;
  }
  .brand-title-wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
  }
  .brand-official-logo {
    min-height: 46px;
    padding: 8px 18px;
  }
  .brand-group-header h3 {
    font-size: 1.25rem;
    line-height: 1.4;
    word-break: keep-all;
    margin-bottom: 6px;
  }
  .brand-group-header p {
    font-size: 0.9rem;
    line-height: 1.55;
    word-break: keep-all;
  }
  .solution-diagram-card {
    padding: 16px 14px;
    border-radius: 12px;
  }
  .bentley-matrix-card {
    padding: 20px 14px;
    border-radius: 12px;
  }
  .solution-diagram-footer,
  .matrix-card-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
  }
  .solution-diagram-footer .btn,
  .matrix-card-footer .btn {
    width: 100%;
    justify-content: center;
  }

  .location-top-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 20px;
  }
}