/* ========================================
   장철건설 데모 사이트 - CSS
   래퍼런스: 배전인(baejeonin.com) 스타일
   ======================================== */

:root {
  --primary: #1a3a5c;
  --primary-dark: #0f2744;
  --primary-light: #2a5a8c;
  --accent: #d4a843;
  --accent-light: #e8c468;
  --text: #333;
  --text-light: #666;
  --text-muted: #999;
  --bg: #fff;
  --bg-light: #f7f8fa;
  --bg-dark: #1a1a2e;
  --border: #e0e0e0;
  --shadow: 0 2px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  font-family: 'Noto Sans KR', sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: var(--bg);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.text-accent { color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212,168,67,0.4);
}

.btn-outline {
  border: 2px solid #fff;
  color: #fff;
  background: transparent;
}
.btn-outline:hover {
  background: #fff;
  color: var(--primary);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-light); }

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

/* ========================================
   Header
   ======================================== */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
  transition: var(--transition);
}

#header.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

#header .nav-link {
  color: var(--text);
}

#header .mobile-toggle span {
  background: var(--text);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 96px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 10;
}

.logo-img {
  height: 72px;
  width: auto;
  display: block;
  transition: var(--transition);
}

.logo:hover .logo-img {
  transform: scale(1.03);
}

.footer-logo .logo-img {
  height: 78px;
  background: transparent;
  filter: brightness(0) invert(1) opacity(0.92);
}

#gnb ul {
  display: flex;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent) !important;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 10;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  transition: var(--transition);
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background: var(--primary-dark);
  z-index: 999;
  transition: right 0.4s ease;
  padding: 116px 30px 30px;
}

.mobile-nav.open { right: 0; }

.mobile-nav ul { display: flex; flex-direction: column; gap: 0; }

.mobile-nav a {
  display: block;
  padding: 16px 0;
  color: #fff;
  font-size: 17px;
  font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.mobile-nav a:hover { color: var(--accent); }

.mobile-nav-contact {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.2);
}

.mobile-nav-contact p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 8px;
  font-size: 15px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: url('public/picture/20240628_073723.jpg') center/cover no-repeat;
  color: #fff;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,39,68,0.85) 0%, rgba(26,58,92,0.75) 50%, rgba(10,10,30,0.8) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 0 20px;
}

.hero-sub {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 3px;
  margin-bottom: 16px;
  color: var(--accent-light);
}

.hero-title {
  font-size: 72px;
  font-weight: 900;
  letter-spacing: -2px;
  margin-bottom: 20px;
  line-height: 1.1;
}

.hero-desc {
  font-size: 20px;
  font-weight: 300;
  line-height: 1.8;
  margin-bottom: 36px;
  color: rgba(255,255,255,0.9);
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 40px;
}

.hero-contact {
  display: flex;
  gap: 30px;
  justify-content: center;
}

.hero-contact a {
  color: rgba(255,255,255,0.9);
  font-size: 17px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-contact a:hover { color: var(--accent); }

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero-scroll span {
  display: block;
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 12px;
  position: relative;
}

.hero-scroll span::after {
  content: '';
  width: 4px;
  height: 8px;
  background: #fff;
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollDown 1.5s infinite;
}

@keyframes scrollDown {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 22px; }
}

/* ========================================
   Quick Menu Cards
   ======================================== */
.quick-menu {
  position: relative;
  margin-top: -80px;
  z-index: 5;
  padding-bottom: 0;
}

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

.quick-card {
  background: #fff;
  padding: 40px 24px;
  text-align: center;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.quick-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.quick-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
  transition: var(--transition);
}

.quick-card:hover .quick-icon {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
}

.quick-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--primary);
}

.quick-card p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ========================================
   Section Common
   ======================================== */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-sub {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */
.section-about { background: var(--bg-light); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.about-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.about-img img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.about-info {
  padding: 30px;
}

.about-info h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
}

.about-list li {
  display: flex;
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 15px;
}

.about-list li strong {
  min-width: 100px;
  color: var(--primary);
  font-weight: 600;
}

.about-list li span { color: var(--text-light); }

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

.philosophy-item {
  text-align: center;
  padding: 16px 12px;
}

.philosophy-item i {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 10px;
}

.philosophy-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.philosophy-item p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========================================
   Business Section
   ======================================== */
.business-hero {
  position: relative;
  padding: 100px 0;
  background: url('public/picture/20240407_150734.jpg') center/cover no-repeat;
  text-align: center;
  color: #fff;
}

.business-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,39,68,0.9), rgba(26,26,46,0.85));
}

.business-hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.business-hero-content h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 24px;
}

.business-hero-content p {
  font-size: 16px;
  line-height: 1.9;
  color: rgba(255,255,255,0.85);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: -60px;
  position: relative;
  z-index: 3;
  padding: 0 20px;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.business-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.business-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.business-card-img img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.business-card-body {
  padding: 28px;
}

.business-card-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.business-card-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

.section-business { padding-bottom: 80px; }

/* ========================================
   RCD Section
   ======================================== */
.section-rcd { background: var(--bg-light); }

.rcd-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 80px;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.rcd-overview-content {
  padding: 40px;
}

.rcd-overview-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.rcd-overview-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.9;
}

.rcd-overview-img img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}

.rcd-flow {
  margin-bottom: 80px;
}

.rcd-flow-title {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 40px;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}

.flow-step {
  background: #fff;
  padding: 28px 16px;
  text-align: center;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  position: relative;
  transition: var(--transition);
}

.flow-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.flow-num {
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 12px;
}

.flow-icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
}

.flow-step:hover .flow-icon {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
}

.flow-step h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.flow-step p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.rcd-features h3 {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 40px;
}

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

.feature-card {
  background: #fff;
  padding: 36px 24px;
  text-align: center;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary);
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--accent);
  color: #fff;
}

.feature-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========================================
   Equipment Section
   ======================================== */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.equip-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.equip-img {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--bg-light);
}

.equip-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.equip-card:hover .equip-img img {
  transform: scale(1.05);
}

.equip-img-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--primary);
  opacity: 0;
}

.equip-body {
  padding: 20px;
  text-align: center;
}

.equip-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.equip-spec {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 10px;
}

.equip-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--bg-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* ========================================
   Portfolio Section
   ======================================== */
.section-portfolio { background: var(--bg-light); }

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

.filter-btn {
  padding: 10px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

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

.portfolio-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.portfolio-item.hidden { display: none; }

.portfolio-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.portfolio-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: var(--transition);
}

.portfolio-item:hover .portfolio-img img {
  transform: scale(1.08);
}

.portfolio-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 30px 24px;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: #fff;
  transform: translateY(20px);
  opacity: 0;
  transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
  transform: translateY(0);
  opacity: 1;
}

.portfolio-overlay h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
}

.portfolio-overlay p {
  font-size: 13px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 8px;
}

.portfolio-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--accent);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

/* ========================================
   Capability Section
   ======================================== */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.cap-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.cap-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.cap-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  padding: 24px 24px 0;
}

.cap-card > p {
  font-size: 14px;
  color: var(--text-light);
  padding: 8px 24px 0;
}

.cap-detail {
  padding: 20px 24px 24px;
}

.cap-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 14px;
}

.cap-row span { color: var(--text-light); }
.cap-row strong { color: var(--primary); font-weight: 600; }

/* ========================================
   Contact Section
   ======================================== */
.section-contact { background: var(--bg-light); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-form {
  background: #fff;
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  transition: var(--transition);
  background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,58,92,0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-info-card {
  background: var(--primary);
  padding: 36px;
  border-radius: var(--radius-lg);
  color: #fff;
  margin-bottom: 20px;
}

.ci-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.ci-item:last-child { border-bottom: none; }

.ci-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.ci-item h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--accent-light);
}

.ci-item p {
  font-size: 15px;
  color: rgba(255,255,255,0.9);
}

.ci-item a { color: rgba(255,255,255,0.9); }
.ci-item a:hover { color: var(--accent-light); }

.contact-banner {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  padding: 30px;
  border-radius: var(--radius-lg);
  text-align: center;
  color: #fff;
}

.contact-banner p {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.5;
}

.contact-banner .btn {
  background: #fff;
  color: var(--primary);
}
.contact-banner .btn:hover { background: var(--primary); color: #fff; }

/* ========================================
   Location Section
   ======================================== */
.location-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  align-items: start;
}

.map-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.map-wrap iframe {
  display: block;
}

.location-info {
  background: #fff;
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.loc-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid #f0f0f0;
}

.loc-item:last-child { border-bottom: none; }

.loc-item > i {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
}

.loc-item h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.loc-item p {
  font-size: 14px;
  color: var(--text-light);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo .logo-text { color: #fff; }

.footer-info p {
  font-size: 14px;
  margin-bottom: 8px;
  line-height: 1.7;
}

.footer-copy {
  color: var(--accent);
  font-weight: 600;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

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

.footer-contact p {
  font-size: 14px;
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.footer-contact i {
  color: var(--accent);
  margin-top: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ========================================
   Floating Buttons
   ======================================== */
.floating-btns {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  transition: var(--transition);
}

.float-phone { background: var(--accent); }
.float-phone:hover { background: var(--accent-light); transform: scale(1.1); }

.float-top {
  background: var(--primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

.float-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.float-top:hover { background: var(--primary-light); }

/* ========================================
   Greeting
   ======================================== */
.greeting-section {
  background:
    linear-gradient(135deg, rgba(247,248,250,0.96), rgba(255,255,255,0.96)),
    url('public/picture/20240525_134341.jpg') center/cover no-repeat;
}

.greeting-card {
  max-width: 920px;
  margin: 0 auto;
  background: #fff;
  padding: 56px 64px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border-top: 5px solid var(--accent);
}

.greeting-card .section-title {
  text-align: left;
  margin-bottom: 32px;
}

.greeting-card .section-sub {
  text-align: left;
}

.greeting-body {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid rgba(212,168,67,0.35);
}

.greeting-body p {
  font-size: 17px;
  color: var(--text);
  line-height: 2;
  margin-bottom: 20px;
  word-break: keep-all;
}

.greeting-body p:last-child {
  margin-top: 28px;
  margin-bottom: 0;
  font-weight: 700;
  color: var(--primary);
}

@media (max-width: 600px) {
  .greeting-card {
    padding: 36px 24px;
  }

  .greeting-body {
    padding-left: 18px;
  }

  .greeting-body p {
    font-size: 15px;
    line-height: 1.9;
  }
}

/* ========================================
   Equipment Table
   ======================================== */
.equip-table-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}

.equip-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: #fff;
}

.equip-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.equip-table thead {
  background: var(--primary);
  color: #fff;
}

.equip-table th {
  padding: 14px 18px;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.equip-table td {
  padding: 13px 18px;
  text-align: center;
  border-bottom: 1px solid #f0f0f0;
  color: var(--text);
  vertical-align: middle;
}

.equip-table td[rowspan] {
  background: rgba(26, 58, 92, 0.04);
  font-weight: 600;
  color: var(--primary);
  border-right: 1px solid #f0f0f0;
}

.equip-table tbody tr:hover {
  background: rgba(26,58,92,0.03);
}

.equip-table tbody tr:last-child td {
  border-bottom: none;
}

.equip-table-total {
  background: var(--bg-light);
}

.equip-table-total td {
  border-bottom: none;
}

.equip-table-group td {
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  color: #fff !important;
  font-weight: 700;
  text-align: left !important;
  padding: 12px 18px !important;
  letter-spacing: 0.5px;
  font-size: 14px;
}

.equip-table-subtotal td {
  background: var(--bg-light);
  color: var(--primary) !important;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 18px !important;
}

.equip-table-note {
  font-size: 13px;
  color: var(--text-light);
  margin-top: -10px;
  margin-bottom: 16px;
  padding-left: 14px;
}

@media (max-width: 600px) {
  .equip-table { font-size: 13px; }
  .equip-table th, .equip-table td { padding: 10px 10px; }
  .equip-table-title { font-size: 18px; }
}

/* ========================================
   Sub Page - Page Hero
   ======================================== */
.sub-page #header { background: rgba(255,255,255,0.97); box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.sub-page .logo-text { color: var(--text); }
.sub-page .nav-link { color: var(--text); }
.sub-page .mobile-toggle span { background: var(--text); }

.page-hero {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: url('public/picture/20240510_102439.jpg') center/cover no-repeat;
  margin-top: 96px;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,39,68,0.85), rgba(10,10,30,0.75));
}

.page-hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
}

.page-hero-content h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 8px;
}

.page-hero-content p {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--accent-light);
  text-transform: uppercase;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .flow-steps { grid-template-columns: repeat(4, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .equipment-grid { grid-template-columns: repeat(3, 1fr); }
  .business-grid { margin-top: -40px; }
}

@media (max-width: 900px) {
  #gnb { display: none; }
  .mobile-toggle { display: flex; }

  .hero-title { font-size: 48px; }
  .hero-desc { font-size: 16px; }
  .hero-contact { flex-direction: column; gap: 10px; }

  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .business-grid { grid-template-columns: 1fr; }
  .rcd-overview { grid-template-columns: 1fr; }
  .rcd-overview-img { order: -1; }
  .rcd-overview-img img { min-height: 200px; }
  .flow-steps { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .equipment-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .location-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }

  .section-title { font-size: 28px; }
  .section { padding: 70px 0; }
}

@media (max-width: 600px) {
  .header-inner { height: 76px; }
  .logo-img { height: 52px; }
  .page-hero { margin-top: 76px; }
  .mobile-nav { padding-top: 96px; }
  html { scroll-padding-top: 76px; }

  .hero-title { font-size: 36px; }
  .hero-sub { font-size: 13px; letter-spacing: 2px; }
  .hero-cta { flex-direction: column; align-items: center; }
  .btn { padding: 12px 26px; font-size: 14px; }

  .quick-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .quick-card { padding: 24px 16px; }
  .quick-icon { width: 50px; height: 50px; font-size: 22px; }

  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .equipment-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .business-hero-content h2 { font-size: 26px; }
  .business-hero { padding: 60px 0; }

  .contact-form { padding: 24px; }
  .contact-info-card { padding: 24px; }

  .floating-btns { bottom: 20px; right: 20px; }
  .float-btn { width: 46px; height: 46px; font-size: 18px; }

  .portfolio-filter { gap: 6px; }
  .filter-btn { padding: 8px 16px; font-size: 13px; }
}

/* ========================================
   Gallery
   ======================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: background 0.3s ease;
  pointer-events: none;
}

.gallery-item:hover::after {
  background: rgba(0,0,0,0.15);
}

/* ========================================
   Method Gallery Cards
   ======================================== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.method-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: var(--transition);
  border: 3px solid transparent;
}

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

.method-card.active {
  border-color: var(--accent);
  box-shadow: 0 8px 30px rgba(212,168,67,0.25);
}

.method-card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.method-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.method-card:hover .method-card-img img {
  transform: scale(1.08);
}

.method-card-body {
  padding: 20px;
  text-align: center;
}

.method-card-body h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.method-card-body p {
  font-size: 13px;
  color: var(--text-muted);
}

.method-detail {
  display: none;
  margin-top: 30px;
  padding: 30px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  animation: fadeSlideDown 0.4s ease;
}

@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

.method-detail.active {
  display: block;
}

.method-detail-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

.method-detail-title i {
  color: var(--accent);
}

.method-detail-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.method-detail-grid img {
  width: 100%;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  aspect-ratio: 4/3;
  object-fit: cover;
}

.method-detail-grid img:hover {
  transform: scale(1.04);
  box-shadow: var(--shadow);
}

/* ========================================
   Lightbox
   ======================================== */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.92);
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.3);
}

.lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius);
  transition: opacity 0.25s ease;
}

.lightbox-spinner {
  position: absolute;
  width: 56px;
  height: 56px;
  border: 4px solid rgba(255,255,255,0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spinSpinner 0.8s linear infinite;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.lightbox.loading .lightbox-spinner { opacity: 1; }

@keyframes spinSpinner {
  to { transform: rotate(360deg); }
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-nav:hover {
  background: rgba(255,255,255,0.3);
}

.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

.lightbox-counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 1px;
}

/* ========================================
   Gallery Responsive
   ======================================== */
@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .method-detail-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .method-grid { grid-template-columns: repeat(2, 1fr); }
  .method-detail-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .method-grid { grid-template-columns: 1fr; }
  .method-detail-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .method-detail { padding: 20px; }
  .method-card-img { height: 180px; }
  .lightbox-nav { width: 40px; height: 40px; font-size: 16px; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
  .lightbox-close { top: 10px; right: 10px; width: 40px; height: 40px; }
}