/* =============================================
   (주)케이라이온 홈페이지 - 메인 스타일시트
   ============================================= */

/* --- Google Fonts & 기본 설정 --- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700;900&family=Roboto:wght@300;400;500;700&display=swap');

:root {
  --navy:       #1E3A5F;
  --navy-dark:  #132740;
  --navy-light: #2a4f80;
  --gold:       #C8922A;
  --gold-light: #e0a83a;
  --gray-dark:  #2c2c2c;
  --gray-mid:   #555555;
  --gray-light: #f4f6f9;
  --white:      #ffffff;
  --border:     #dde3ec;
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans KR', sans-serif;
  color: var(--gray-dark);
  background: var(--white);
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

/* =============================================
   공통 유틸리티
   ============================================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--navy);
  text-align: center;
  margin-bottom: 12px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--gold);
  margin: 16px auto 0;
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--gray-mid);
  font-size: 1rem;
  margin-bottom: 48px;
  margin-top: 8px;
}

.section-wrap {
  padding: 80px 0;
}

.section-wrap.bg-light {
  background: var(--gray-light);
}

.section-wrap.bg-navy {
  background: var(--navy);
}

.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-gold {
  background: var(--gold);
  color: var(--white);
}
.btn-gold:hover { background: var(--gold-light); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  border: 2px solid var(--white);
  color: var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--navy); }

/* =============================================
   헤더 & 네비게이션
   ============================================= */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(19, 39, 64, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(200,146,42,0.3);
  transition: var(--transition);
}

#header.scrolled {
  background: rgba(19, 39, 64, 0.99);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.logo-img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  mix-blend-mode: screen;
  transition: var(--transition);
}
.logo-wrap:hover .logo-img {
  filter: brightness(1.2);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text .logo-main {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 1px;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.logo-text .logo-sub {
  font-size: 0.72rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.5px;
}

/* 네비게이션 */
.gnb {
  display: flex;
  align-items: center;
  gap: 4px;
}

.gnb > li {
  position: relative;
}

.gnb > li > a {
  display: block;
  padding: 0 16px;
  height: 72px;
  line-height: 72px;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: var(--transition);
  white-space: nowrap;
}

.gnb > li > a:hover,
.gnb > li.active > a {
  color: var(--gold);
}

.gnb > li > a::after {
  content: '';
  display: block;
  height: 3px;
  background: var(--gold);
  position: absolute;
  bottom: 0; left: 16px; right: 16px;
  transform: scaleX(0);
  transition: var(--transition);
  border-radius: 2px 2px 0 0;
}

.gnb > li > a:hover::after,
.gnb > li.active > a::after {
  transform: scaleX(1);
}

/* 드롭다운 */
.dropdown {
  position: absolute;
  top: 72px;
  left: 0;
  min-width: 180px;
  background: var(--navy-dark);
  border-top: 3px solid var(--gold);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 100;
}

.gnb > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li a {
  display: block;
  padding: 12px 20px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.8);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: var(--transition);
}

.dropdown li a:hover {
  color: var(--gold);
  background: rgba(255,255,255,0.05);
  padding-left: 28px;
}

/* 모바일 햄버거 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* 모바일 메뉴 */
.mobile-menu {
  display: none;
  background: var(--navy-dark);
  position: fixed;
  top: 72px; left: 0; right: 0;
  z-index: 999;
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  border-top: 2px solid var(--gold);
}

.mobile-menu.open { display: block; }

.mobile-menu li a {
  display: block;
  padding: 14px 24px;
  color: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  font-size: 0.95rem;
}

.mobile-menu li a:hover { color: var(--gold); background: rgba(255,255,255,0.05); }
.mobile-menu .mobile-sub a { padding-left: 40px; font-size: 0.88rem; color: rgba(255,255,255,0.6); }

/* =============================================
   히어로 섹션
   ============================================= */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('https://www.genspark.ai/api/files/s/l8f2S2oJ');
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 8s ease;
}

.hero-bg.loaded { transform: scale(1); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(19, 39, 64, 0.82) 0%,
    rgba(19, 39, 64, 0.65) 50%,
    rgba(19, 39, 64, 0.75) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  max-width: 900px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  background: var(--gold);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 20px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
  animation: fadeInDown 0.8s ease both;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title span { color: var(--gold); }

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 300;
  color: rgba(255,255,255,0.85);
  margin-bottom: 12px;
  letter-spacing: 2px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-eng {
  font-family: 'Roboto', sans-serif;
  font-size: 0.9rem;
  color: var(--gold);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.8s both;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem;
  letter-spacing: 2px;
  animation: bounce 2s infinite;
  z-index: 2;
}

.hero-scroll::before {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.4);
}

/* =============================================
   퀵 인포 (히어로 하단)
   ============================================= */
.quick-info {
  background: var(--navy);
  padding: 0;
}

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

.quick-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 28px 24px;
  border-right: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}

.quick-item:last-child { border-right: none; }
.quick-item:hover { background: rgba(255,255,255,0.05); }

.quick-icon {
  width: 44px;
  height: 44px;
  background: rgba(200,146,42,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
  color: var(--gold);
}

.quick-text p:first-child {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.quick-text p:last-child {
  font-size: 0.88rem;
  color: var(--white);
  font-weight: 500;
}

/* =============================================
   회사소개 섹션 (인트로)
   ============================================= */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-intro-text h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: 20px;
}

.about-intro-text h2 span { color: var(--gold); }

.about-intro-text p {
  color: var(--gray-mid);
  line-height: 1.9;
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.stat-item {
  text-align: center;
  padding: 20px;
  background: var(--gray-light);
  border-radius: 8px;
  border-top: 3px solid var(--gold);
}

.stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--navy);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--gray-mid);
  margin-top: 4px;
}

.about-intro-img {
  position: relative;
}

.about-intro-img img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.about-intro-img::before {
  content: '';
  position: absolute;
  top: -16px; left: -16px;
  width: 60%;
  height: 60%;
  border: 4px solid var(--gold);
  border-radius: 8px;
  z-index: -1;
}

/* =============================================
   제품 카드 (홈 미리보기)
   ============================================= */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid var(--border);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(30,58,95,0.15);
}

.product-card-img {
  height: 220px;
  overflow: hidden;
  background: #f8f9fb;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
}

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

.product-card-body {
  padding: 20px;
}

.product-badge {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.product-card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}

.product-card-body p {
  font-size: 0.82rem;
  color: var(--gray-mid);
  line-height: 1.6;
}

.product-card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
}

.link-arrow {
  color: var(--gold);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.link-arrow:hover { gap: 10px; }

.btn-outline:hover {
  background: var(--navy) !important;
  color: var(--white) !important;
}

/* =============================================
   페이지 히어로 (서브 페이지 상단)
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  padding: 120px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

.page-hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.page-hero p {
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.breadcrumb span { color: var(--gold); }

/* =============================================
   탭 메뉴
   ============================================= */
.tab-menu {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
  border-bottom: 2px solid var(--border);
  flex-wrap: wrap;
}

.tab-btn {
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-mid);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
  color: var(--navy);
  border-bottom-color: var(--gold);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* =============================================
   회사 개요 테이블
   ============================================= */
.company-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.overview-table {
  width: 100%;
  border-collapse: collapse;
}

.overview-table tr {
  border-bottom: 1px solid var(--border);
}

.overview-table th {
  width: 130px;
  padding: 16px 20px;
  background: var(--gray-light);
  color: var(--navy);
  font-weight: 600;
  font-size: 0.88rem;
  text-align: left;
  white-space: nowrap;
}

.overview-table td {
  padding: 16px 20px;
  color: var(--gray-dark);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* =============================================
   인사말
   ============================================= */
.greeting-wrap {
  max-width: 860px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 12px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.08);
  overflow: hidden;
}

.greeting-header {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  padding: 40px 48px;
  color: var(--white);
}

.greeting-header h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.greeting-header p {
  color: var(--gold);
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.greeting-body {
  padding: 48px;
}

.greeting-body p {
  font-size: 1rem;
  line-height: 2;
  color: var(--gray-mid);
  margin-bottom: 20px;
}

.greeting-body p:last-child { margin-bottom: 0; }

.greeting-sign {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
}

.greeting-sign-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

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

/* =============================================
   인증서 & 특허증 갤러리
   ============================================= */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.cert-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.1);
  transition: var(--transition);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(30,58,95,0.15);
}

.cert-card-header {
  background: var(--navy);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.cert-card-header .cert-icon {
  width: 36px;
  height: 36px;
  background: var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
  flex-shrink: 0;
}

.cert-card-header h3 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
}

.cert-card-img {
  padding: 20px;
  background: #f8f9fb;
  cursor: pointer;
}

.cert-card-img img {
  width: 100%;
  border-radius: 6px;
  transition: var(--transition);
}

.cert-card-img:hover img { transform: scale(1.02); }

/* 이미지 라이트박스 */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 0 60px rgba(0,0,0,0.5);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition);
}

.lightbox-close:hover { color: var(--gold); }

/* =============================================
   제품 상세 페이지
   ============================================= */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
  margin-bottom: 48px;
}

.product-detail-img {
  position: relative;
  background: #f8f9fb;
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  min-height: 320px;
}

.product-detail-img img {
  width: 100%;
  height: auto;
  max-height: 420px;
  border-radius: 6px;
  object-fit: contain;
  display: block;
}

.product-model-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--gold);
  color: var(--white);
  padding: 6px 14px;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 700;
}

.product-detail-info h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}

.product-detail-info .product-eng {
  font-family: 'Roboto', sans-serif;
  color: var(--gray-mid);
  font-size: 0.85rem;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.spec-table tr {
  border-bottom: 1px solid var(--border);
}

.spec-table tr:last-child { border-bottom: none; }

.spec-table td:first-child {
  width: 45%;
  padding: 12px 16px;
  background: var(--gray-light);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--navy);
}

.spec-table td:last-child {
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--gray-dark);
}

/* 제품 동영상 */
.product-video-wrap {
  margin-top: 40px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  background: #000;
}

.product-video-wrap video {
  width: 100%;
  display: block;
  max-height: 420px;
  object-fit: cover;
}

.video-label {
  background: var(--navy);
  color: var(--white);
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* =============================================
   현장 갤러리
   ============================================= */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.gallery-item {
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
  position: relative;
}

.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(30,58,95,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover::after { opacity: 1; }

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.video-card {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  background: #000;
}

.video-card video {
  width: 100%;
  display: block;
}

.video-card-label {
  background: var(--navy);
  color: var(--white);
  padding: 12px 16px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* =============================================
   주요고객사
   ============================================= */
.clients-img-wrap {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.clients-img-wrap img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

/* =============================================
   기술개발
   ============================================= */
.tech-img-wrap {
  max-width: 960px;
  margin: 0 auto;
}

.tech-img-wrap img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  margin-bottom: 40px;
}

.tech-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.tech-point {
  background: var(--white);
  border-radius: 10px;
  padding: 28px 24px;
  border-top: 4px solid var(--gold);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  text-align: center;
}

.tech-point-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.tech-point h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}

.tech-point p {
  font-size: 0.85rem;
  color: var(--gray-mid);
  line-height: 1.7;
}

/* =============================================
   오시는길
   ============================================= */
.map-wrap {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  margin-bottom: 40px;
}

.map-wrap img {
  width: 100%;
  display: block;
}

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

.contact-card {
  background: var(--navy);
  color: var(--white);
  border-radius: 10px;
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.contact-card:hover { background: var(--navy-light); transform: translateY(-4px); }

.contact-card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.contact-card h4 {
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.contact-card p {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
}

/* =============================================
   푸터
   ============================================= */
#footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.6);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .logo-main { color: var(--white); font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; }
.footer-brand p { font-size: 0.85rem; line-height: 1.8; margin-top: 8px; }

.footer-col h4 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

.footer-col ul li a:hover { color: var(--gold); }

.footer-col p {
  font-size: 0.85rem;
  line-height: 1.9;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom span { color: var(--gold); }

/* =============================================
   회사소개 인트로 — 비디오 영역
   ============================================= */
.about-intro-video {
  position: relative;
  padding: 12px;
  margin: 4px;
}

.about-intro-video video {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.18);
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.about-intro-video::before {
  content: '';
  position: absolute;
  top: -12px;
  left: -12px;
  right: -12px;
  bottom: -12px;
  border: 3px solid var(--gold);
  border-radius: 14px;
  z-index: -1;
}

/* =============================================
   홈 현장 동영상 그리드 (3개)
   ============================================= */
.home-video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.home-video-item {
  border-radius: 10px;
  overflow: hidden;
}

.home-video-wrap {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background: #000;
  aspect-ratio: 16 / 10;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}

.home-video-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.home-video-item:hover .home-video-wrap video {
  transform: scale(1.04);
}

.home-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(19,39,64,0.75) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  pointer-events: none;
}

.home-video-label {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.home-video-label i {
  color: var(--gold);
  font-size: 1rem;
}

@media (max-width: 1024px) {
  .home-video-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
}

@media (max-width: 768px) {
  .home-video-grid { grid-template-columns: 1fr; gap: 16px; }
  .about-intro-video::before { display: none; }
}

@media (max-width: 480px) {
  .home-video-grid { grid-template-columns: 1fr; }
}

/* =============================================
   애니메이션
   ============================================= */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(10px); }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   현장 사진 그리드 (gallery.html)
   ============================================= */
.field-photo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.field-photo-item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
  background: #111;
}

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

.field-photo-item:hover img {
  transform: scale(1.06);
}

.field-photo-overlay {
  position: absolute;
  inset: 0;
  background: rgba(30, 58, 95, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  color: #fff;
  font-size: 1.6rem;
}

.field-photo-item:hover .field-photo-overlay {
  opacity: 1;
}

/* 가로로 넓은 사진 (마지막 1장) */
.field-photo-wide {
  grid-column: span 4;
  aspect-ratio: 16/5;
}

/* 원본 전체 사진 2개 나란히 */
.field-fullimg-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.field-fullimg-item {
  cursor: pointer;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  transition: box-shadow 0.3s ease;
}

.field-fullimg-item:hover {
  box-shadow: 0 16px 48px rgba(30,58,95,0.2);
}

.field-fullimg-item h3 {
  font-size: 1rem;
  color: var(--navy);
  padding: 16px 20px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--gray-light);
}

.field-fullimg-item img {
  width: 100%;
  display: block;
  transition: transform 0.4s ease;
}

.field-fullimg-item:hover img {
  transform: scale(1.02);
}

.field-fullimg-item p {
  text-align: center;
  font-size: 0.78rem;
  color: #888;
  padding: 8px;
  background: var(--gray-light);
}

/* =============================================
   회사소개 동영상 섹션
   ============================================= */
.about-video-wrap {
  margin-bottom: 56px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(30,58,95,0.18);
  background: var(--navy-dark);
  position: relative;
}

.about-video-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--navy);
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 600;
}

.about-video-label i {
  color: var(--gold);
  font-size: 1.1rem;
}

.about-video {
  width: 100%;
  max-height: 520px;
  display: block;
  background: #000;
  object-fit: cover;
}

/* =============================================
   현장 영상 갤러리 (gallery.html 동영상 섹션)
   ============================================= */
.field-video-section {
  margin-bottom: 64px;
}

.field-video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.field-video-item {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(30,58,95,0.13);
  background: var(--navy-dark);
  display: flex;
  flex-direction: column;
}

.field-video-item video {
  width: 100%;
  aspect-ratio: 16/9;
  display: block;
  background: #000;
  object-fit: cover;
}

.field-video-caption {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--navy);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 500;
}

.field-video-caption i {
  color: var(--gold);
}

/* =============================================
   반응형
   ============================================= */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-info-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .tech-points { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .gnb { display: none; }
  .hamburger { display: flex; }

  .section-wrap { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }

  .about-intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .company-overview { grid-template-columns: 1fr; gap: 32px; }
  .product-detail { grid-template-columns: 1fr; gap: 32px; }
  .cert-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: 1fr; }
  .field-video-grid { grid-template-columns: 1fr; }
  .field-photo-grid { grid-template-columns: repeat(2, 1fr); }
  .field-photo-wide { grid-column: span 2; aspect-ratio: 16/6; }
  .field-fullimg-wrap { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .tech-points { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .hero-btns { flex-direction: column; align-items: center; }
  .page-hero h1 { font-size: 1.8rem; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }

  .tab-btn { padding: 12px 20px; font-size: 0.88rem; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .quick-info-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .overview-table th { width: 100px; }
  .greeting-body { padding: 28px; }
  .greeting-header { padding: 28px; }
  .field-photo-grid { grid-template-columns: repeat(2, 1fr); }
  .field-photo-wide { grid-column: span 2; aspect-ratio: 4/3; }
}