/* ==========================================================
   homepage-corporate / style.css
   섹션 구성:
   1.  CSS 변수 & 리셋
   2.  공통 레이아웃 (컨테이너 · 섹션 · 버튼 · 카드)
   3.  네비게이션 (헤더 · GNB · 드롭다운 · 모바일)
   4.  공통 컴포넌트 (페이지 헤더 · 브레드크럼 · 모달)
   5.  index.php — 메인 (hero · slogan · services · features · products · cta · notice)
   6.  about.php — 소개 (intro · values · history 타임라인 · team)
   7.  business.php — 사업분야 (교차 레이아웃 · features)
   8.  product.php — 제품소개 (갤러리 그리드 · 필터탭)
   9.  board.php / board-view.php — 게시판 (테이블 · 페이지네이션)
   10. faq.php — FAQ 아코디언
   11. contact.php — 문의 폼 · 오시는 길
   12. 팝업 레이어
   13. 반응형 미디어 쿼리
========================================================== */

/* ----------------------------------------------------------
   1. CSS 변수 & 리셋
---------------------------------------------------------- */
:root {
  /* 컬러 */
  --color-primary:       #1a56db;
  --color-primary-dark:  #1344b0;
  --color-primary-light: #ebf0fd;
  --color-text:          #1a1a2e;
  --color-text-sub:      #4b5563;
  --color-text-muted:    #9ca3af;
  --color-bg:            #ffffff;
  --color-bg-sub:        #f8faff;
  --color-bg-dark:       #0f172a;
  --color-border:        #e5e7eb;
  --color-gray-100:      #f3f4f6;
  --color-gray-200:      #e5e7eb;
  --color-gray-300:      #d1d5db;
  --color-success:       #10b981;
  --color-error:         #ef4444;

  /* 타이포 */
  --font-family:   'Pretendard Variable', Pretendard, -apple-system,
                   BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 1rem;       /* 16px */
  --line-height:    1.6;

  /* 레이아웃 */
  --container-max:  1200px;
  --container-pad:  1.5rem;
  --section-py:     5rem;
  --section-py-sm:  3rem;

  /* 반경 */
  --radius-sm:  0.375rem;
  --radius-md:  0.75rem;
  --radius-lg:  1.25rem;
  --radius-xl:  2rem;

  /* 그림자 */
  --shadow-sm: 0 1px 3px rgb(0 0 0 / .08);
  --shadow-md: 0 4px 16px rgb(0 0 0 / .10);
  --shadow-lg: 0 8px 32px rgb(0 0 0 / .12);

  /* 전환 */
  --transition: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* 헤더 */
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ----------------------------------------------------------
   2. 공통 레이아웃
---------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

section {
  padding-block: var(--section-py);
}

/* 섹션 헤더 */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}
.section-header--center {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-sub);
  max-width: 640px;
  margin-inline: auto;
}

/* 버튼 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition),
              box-shadow var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 16px rgb(26 86 219 / .35);
}

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

.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.7);
}
.btn-outline-white:hover {
  background: #fff;
  color: var(--color-primary);
}

.btn-full {
  width: 100%;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.0625rem;
}

/* 폼 제출 버튼 상태 (contact.php) */
.btn-text {
  /* 기본 텍스트 */
}
.btn-loading {
  /* 전송 중 텍스트 */
}

/* sr-only: 스크린리더 전용 (board.php caption) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* 카드 */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.card-icon {
  margin-bottom: 1.25rem;
}
.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.card-text {
  font-size: 0.9375rem;
  color: var(--color-text-sub);
}

/* 스크롤 애니메이션 */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.30s; }
.delay-3 { transition-delay: 0.45s; }

/* 빈 메시지 */
.empty-message {
  text-align: center;
  color: var(--color-text-muted);
  padding: 3rem 0;
}

/* ----------------------------------------------------------
   3. 네비게이션 (헤더 · GNB · 드롭다운 · 모바일)
---------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--header-h);
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

/* 로고 */
.header-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
}
.logo-img {
  height: 36px;
  width: auto;
}
.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

/* GNB */
.gnb {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
  background: none;
  border: none;
}
.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* 드롭다운 */
.nav-dropdown {
  position: relative;
}
.dropdown-arrow {
  transition: transform var(--transition);
}
.nav-dropdown:hover .dropdown-arrow,
.nav-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition),
              visibility var(--transition);
  z-index: 10;
  padding: 0.375rem 0;
}
/* 버튼-메뉴 사이 8px 갭을 투명 브릿지로 연결 (hover 끊김 방지) */
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.625rem 1.125rem;
  font-size: 0.9rem;
  color: var(--color-text);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.dropdown-item:hover,
.dropdown-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* 햄버거 */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover {
  background: var(--color-gray-100);
}
.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger.open .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 모바일 오버레이 */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 800;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.mobile-nav-overlay.visible {
  opacity: 1;
  visibility: visible;
}

/* 헤더 높이만큼 첫 섹션 밀기 */
/* C3 버그 수정: body > *:not(.site-header):first-of-type → 팝업 div에 적용되는 문제
   .page-header는 margin-top: var(--header-h) 자체 처리
   .section-hero는 padding-top: var(--header-h) 자체 처리
   그 외 첫 섹션이 되는 경우를 명시적으로 지정 */
body > .section-hero:first-of-type {
  /* section-hero는 자체 padding-top으로 처리 */
}
/* 내부 페이지(about, business 등)의 .page-header는 자체 margin-top으로 처리됨 */

/* ----------------------------------------------------------
   4. 공통 컴포넌트 — 페이지 헤더 · 브레드크럼 · 모달
---------------------------------------------------------- */

/* 페이지 헤더 */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding-block: 4rem 3rem;
  margin-top: var(--header-h);
  color: #fff;
}
.page-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

/* 브레드크럼 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.875rem;
}
.breadcrumb-link {
  color: rgba(255,255,255,.75);
  transition: color var(--transition);
}
.breadcrumb-link:hover {
  color: #fff;
}
.breadcrumb-sep {
  color: rgba(255,255,255,.5);
  font-size: 0.75rem;
}
.breadcrumb-current {
  color: #fff;
  font-weight: 600;
}

/* 법적 모달 */
.legal-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.legal-modal-overlay[hidden] {
  display: none;
}
.legal-modal {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}
.legal-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.legal-modal-title {
  font-size: 1.125rem;
  font-weight: 700;
}
.legal-modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.legal-modal-close:hover {
  background: var(--color-gray-100);
  color: var(--color-text);
}
.legal-modal-body {
  overflow-y: auto;
  padding: 1.5rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--color-text-sub);
  white-space: pre-wrap;
}

/* ----------------------------------------------------------
   5. index.php — 메인 페이지
---------------------------------------------------------- */

/* Hero */
.section-hero,
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  margin-top: 0;
  padding-top: var(--header-h);
  overflow: hidden;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: var(--color-bg-dark);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom right,
    rgba(15,23,42,.75) 0%,
    rgba(26,86,219,.4) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-inline: var(--container-pad);
  max-width: var(--container-max);
  margin-inline: auto;
  color: #fff;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 2rem;
  opacity: .85;
  max-width: 560px;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* hero-scroll 인디케이터 */
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 2;
}
.hero-scroll-text {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
}
.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,.6), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* Slogan */
.section-slogan {
  background: var(--color-bg-sub);
  text-align: center;
}
.slogan-inner {
  /* slogan 내부 래퍼 */
}
.slogan-title {
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: 1rem;
}
.slogan-desc {
  color: var(--color-text-sub);
  max-width: 640px;
  margin-inline: auto;
  font-size: 1.0625rem;
}

/* 카드 그리드 (index.php, product.php 공용) */
.card-grid {
  display: grid;
  gap: 1.5rem;
}
.card-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}
.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.card-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* 카드 컴포넌트 확장 (card-body, card-link, card-image, card-badge) */
.card-body {
  padding-top: 0.25rem;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: 0.75rem;
  transition: gap var(--transition);
}
.card-link:hover {
  gap: 0.5rem;
}
.card-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-gray-100);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.card--product:hover .card-image img {
  transform: scale(1.05);
}
.card-image-placeholder {
  width: 100%;
  height: 100%;
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-sm);
}
.card--product {
  padding: 0;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
}
.card--product:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,.1);
}
.card--product .card-body {
  padding: 1.25rem;
}

/* Services Summary (메인) — .section-services가 정본 */
.section-services,
.section-services-summary {
  background: var(--color-bg);
}
.services-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.service-summary-card {
  background: var(--color-bg-sub);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.service-summary-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.service-summary-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
}
.service-summary-card p {
  font-size: 0.9375rem;
  color: var(--color-text-sub);
  flex: 1;
}
.service-summary-card a {
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 600;
  transition: gap var(--transition);
}

/* Features (메인 index.php #features) — 다크 배경 */
.section-features#features,
.section-features-main,
.section-main-features {
  background: var(--color-bg-dark);
  color: #fff;
}
.section-features#features .section-label,
.section-features-main .section-label,
.section-main-features .section-label {
  color: rgba(255,255,255,.6);
}
.section-features#features .section-title,
.section-features-main .section-title,
.section-main-features .section-title {
  color: #fff;
}
.main-features-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.main-features-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.main-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.main-feature-check {
  flex-shrink: 0;
  margin-top: 0.125rem;
}
.main-feature-text {
  font-size: 1rem;
  color: rgba(255,255,255,.85);
}

/* index.php features-list + features-item (심플 리스트 형태) */
.section-features ul.features-list {
  /* index.php는 <ul class="features-list"> 사용 */
}
.features-item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  font-size: 1rem;
  color: rgba(255,255,255,.85);
}

/* Products Summary — .section-products가 정본 */
.section-products,
.section-products-summary {
  background: var(--color-bg-sub);
}
.products-summary-cta {
  margin-top: 2rem;
}

/* CTA */
.section-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
}
.section-cta .section-title {
  color: #fff;
}
.cta-inner {
  /* CTA 내부 래퍼 */
}
.cta-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}
.cta-desc {
  color: rgba(255,255,255,.85);
  max-width: 540px;
  margin: 0 auto 2rem;
  font-size: 1.0625rem;
}

/* 최근 공지 (메인) — .section-notices가 정본 */
.section-notices,
.section-recent-notice {
  background: var(--color-bg);
}

/* notice-list: index.php의 <ul class="notice-list"> */
.notice-list,
.notice-list-simple {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* notice-item: index.php의 <li class="notice-item"> */
.notice-item,
.notice-list-item {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}
.notice-item:last-child,
.notice-list-item:last-child {
  border-bottom: none;
}
.notice-item:hover,
.notice-list-item:hover {
  background: var(--color-bg-sub);
}

/* notice-link: <a class="notice-link"> */
.notice-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  gap: 1rem;
}

/* notice-title: <span class="notice-title"> */
.notice-title,
.notice-list-title {
  font-size: 0.9375rem;
  font-weight: 500;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text);
}

/* notice-date: <span class="notice-date"> */
.notice-date,
.notice-list-date {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.notice-more {
  text-align: right;
  margin-top: 1rem;
}
.notice-more a {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 600;
  transition: gap var(--transition);
}

/* ----------------------------------------------------------
   6. about.php — 소개
---------------------------------------------------------- */

/* 소개 2열 레이아웃 */
.section-about-intro {
  background: var(--color-bg);
}
.intro-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
/* intro-image / intro-text: about.php의 2열 레이아웃 래퍼 */
.intro-image {
  /* 왼쪽 이미지 영역 */
}
.intro-text {
  /* 오른쪽 텍스트 영역 */
}
.intro-img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.intro-desc {
  font-size: 1.0625rem;
  color: var(--color-text-sub);
  line-height: 1.8;
  margin-top: 1rem;
}

/* 핵심 가치 */
.section-values {
  background: var(--color-bg-sub);
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* 연혁 타임라인 */
.section-history {
  background: var(--color-bg);
}
.timeline {
  position: relative;
  max-width: 720px;
  margin-inline: auto;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0.875rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  align-items: flex-start;
  position: relative;
  padding: 1.25rem 0;
}
.timeline-item:not(:last-child) {
  border-bottom: none;
}
.timeline-year {
  text-align: right;
  padding-right: 1rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
}
.timeline-dot {
  position: absolute;
  left: -1.375rem;
  top: 1.5rem;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.timeline-content {
  font-size: 1rem;
  color: var(--color-text-sub);
  padding-top: 0.1875rem;
  grid-column: 2;
}

/* 팀 소개 */
.section-team {
  background: var(--color-bg-sub);
}
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.team-card {
  text-align: center;
}
.team-image {
  margin-bottom: 1rem;
}
.team-img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  margin-inline: auto;
  border: 4px solid var(--color-bg);
  box-shadow: var(--shadow-md);
}
.team-img-placeholder {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: var(--color-gray-100);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.team-name {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.team-role {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* ----------------------------------------------------------
   7. business.php — 사업분야
---------------------------------------------------------- */

/* 소개 */
.section-business-intro {
  background: var(--color-bg-sub);
  padding-block: 4rem;
}
.section-business-intro .section-header {
  margin-bottom: 0;
}

/* 서비스 교차 레이아웃 */
.section-services-detail {
  background: var(--color-bg);
}
.service-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding-block: 4rem;
  border-bottom: 1px solid var(--color-border);
}
.service-item:last-child {
  border-bottom: none;
}
.service-item.reverse {
  direction: rtl;
}
.service-item.reverse > * {
  direction: ltr;
}
.service-img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.service-img-placeholder {
  width: 100%;
  height: 340px;
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
}
.service-number {
  display: block;
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-primary-light);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.service-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}
.service-desc {
  font-size: 1.0625rem;
  color: var(--color-text-sub);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

/* 강점 섹션 (business.php) */
.section-features {
  background: var(--color-bg-sub);
}
.features-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
/* features-heading: business.php의 왼쪽 제목 영역 */
.features-heading {
  /* 왼쪽: 섹션 레이블 + 제목 */
}
.features-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
/* features-list-item: business.php의 <li class="features-list-item"> */
.features-list-item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  font-size: 1rem;
  color: var(--color-text-sub);
}
.features-check {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  margin-top: 0.125rem;
}

/* ----------------------------------------------------------
   8. product.php — 제품소개
---------------------------------------------------------- */
.section-product-intro {
  background: var(--color-bg-sub);
  padding-block: 4rem;
}
.product-intro-desc {
  font-size: 1.0625rem;
  color: var(--color-text-sub);
  line-height: 1.8;
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

/* section-product-gallery: product.php 필터 + 그리드 래퍼 */
.section-product-gallery {
  background: var(--color-bg);
}

/* product-view.php 제품 상세 (게시판 형식) */
.section-product-view {
  background: var(--color-bg);
}
.product-detail {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.product-detail-header {
  padding: 2rem 2rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}
.product-detail-category {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 9999px;
  margin-bottom: 0.75rem;
}
.product-detail-title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.product-detail-meta {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--color-text-muted, #999);
}
.product-detail-body {
  padding: 2rem;
}
.product-detail-image {
  margin-bottom: 2rem;
}
.product-detail-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm, 4px);
}
.product-detail-desc {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-sub);
}
.product-detail-actions {
  margin-top: 2rem;
  text-align: center;
}

/* 카테고리 필터 탭 */
.product-filter {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.filter-tab {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid var(--color-border);
  color: var(--color-text-sub);
  background: var(--color-bg);
  transition: all var(--transition);
}
.filter-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.filter-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* 제품 갤러리 그리드 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.product-card-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-gray-100);
}
.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.product-card:hover .product-card-image img {
  transform: scale(1.05);
}
.product-card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100);
}
.product-card-body {
  padding: 1.25rem;
}
.product-card-category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: 0.375rem;
}
.product-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.product-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ----------------------------------------------------------
   9. board.php / board-view.php — 게시판
---------------------------------------------------------- */
.section-board,
.section-board-view {
  background: var(--color-bg);
}

/* 게시판 테이블 */
.board-table-wrap {
  overflow-x: auto;
}
.board-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}
.board-table th,
.board-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}
.board-table th {
  font-weight: 700;
  background: var(--color-gray-100);
  color: var(--color-text-sub);
  font-size: 0.875rem;
  white-space: nowrap;
}
.board-table tbody tr:hover {
  background: var(--color-bg-sub);
}
/* col-num: board.php의 번호 열 (정본), col-no: 구 선택자 */
.board-table .col-num,
.board-table .col-no     { width: 72px;  text-align: center; }
.board-table .col-title  { min-width: 200px; }
.board-table .col-date   { width: 110px; text-align: center; white-space: nowrap; }
.board-table .col-views  { width: 80px;  text-align: center; }

/* board-row--pinned: 고정글 행 강조 */
.board-table .board-row--pinned {
  background: var(--color-primary-light);
}

/* badge-pinned: 정본 (board.php, board-view.php) — board-pin-badge: 구 선택자 */
.badge-pinned,
.board-pin-badge {
  display: inline-block;
  padding: 0.1875rem 0.5rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  margin-right: 0.375rem;
  vertical-align: middle;
}
.board-title-link {
  color: var(--color-text);
  transition: color var(--transition);
}
.board-title-link:hover {
  color: var(--color-primary);
}

/* 페이지네이션 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.375rem;
  margin-top: 2rem;
}
/* page-btn: 정본 (board.php) — page-link: 구 선택자 */
.page-btn,
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding-inline: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-sub);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: all var(--transition);
  text-decoration: none;
}
.page-btn:hover,
.page-link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
/* page-btn--current: 현재 페이지 (정본) */
.page-btn--current,
.page-link.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  font-weight: 700;
  cursor: default;
}
/* disabled: 비활성화 상태 */
.page-btn.disabled,
.page-link[aria-disabled="true"] {
  opacity: .4;
  pointer-events: none;
}
/* prev/next 화살표 버튼 */
.page-btn--prev,
.page-btn--next {
  font-size: 1.125rem;
}

/* 게시글 상세 */
/* board-view: 게시글 본문 article 래퍼 */
.board-view {
  /* article.board-view */
}

/* board-view-header: 게시글 헤더 (제목 + 메타) */
.board-view-header {
  margin-bottom: 1rem;
}

.board-view-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-block: 1rem;
  border-top: 2px solid var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
  align-items: center;
  flex-wrap: wrap;
}
.board-view-date,
.board-view-views {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}
.board-view-title {
  font-size: 1.5rem;
  font-weight: 800;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: 0;
}
/* board-view-image: 대표 이미지 */
.board-view-image {
  margin-bottom: 2rem;
}
.board-view-image img {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: 8px;
  display: block;
}

/* board-view-attachment: 첨부파일 다운로드 */
.board-view-attachment {
  padding: 1rem 1.25rem;
  background: var(--color-gray-50, #f9fafb);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 2rem;
}
.attachment-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.attachment-link:hover {
  color: var(--color-primary-dark, #1d4ed8);
  text-decoration: underline;
}

/* board-view-content: 정본 (board-view.php) — board-view-body: 구 선택자 */
.board-view-content,
.board-view-body {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-sub);
  min-height: 200px;
  white-space: pre-wrap;
  word-break: break-word;
  padding-bottom: 2rem;
}

/* board-nav: 정본 (board-view.php) — board-view-nav: 구 선택자 */
.board-nav,
.board-view-nav {
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
  padding-top: 1.25rem;
}

/* board-nav-item: 정본 */
.board-nav-item,
.board-nav-item--prev,
.board-nav-item--next,
.board-view-nav-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.board-nav-item:last-child,
.board-nav-item--next {
  border-bottom: none;
}

/* board-nav-label: 정본 */
.board-nav-label,
.board-view-nav-label {
  flex-shrink: 0;
  width: 4rem;
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

/* board-nav-link: 정본 */
.board-nav-link,
.board-view-nav-link {
  color: var(--color-text);
  transition: color var(--transition);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.board-nav-link:hover,
.board-view-nav-link:hover {
  color: var(--color-primary);
}

/* board-nav-empty: 이전글/다음글 없을 때 */
.board-nav-empty {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-style: italic;
}

/* board-back: 목록으로 버튼 래퍼 (정본) — board-view-actions: 구 선택자 */
.board-back,
.board-view-actions {
  display: flex;
  justify-content: flex-start;
  margin-top: 1.5rem;
}

/* board-error: DB 오류/미존재 게시글 메시지 영역 */
.board-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 0;
  text-align: center;
}

/* ----------------------------------------------------------
   10. faq.php — FAQ 아코디언
---------------------------------------------------------- */
.section-faq {
  background: var(--color-bg);
}

.faq-list {
  max-width: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 1.375rem 1rem;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--color-primary);
}
.faq-question[aria-expanded="true"] {
  color: var(--color-primary);
}
.faq-question[aria-expanded="true"] .faq-arrow svg {
  transform: rotate(180deg);
}

.faq-q-mark {
  font-size: 1rem;
  font-weight: 900;
  color: var(--color-primary);
  flex-shrink: 0;
}

.faq-question-text {
  flex: 1;
}

.faq-arrow {
  flex-shrink: 0;
  margin-left: auto;
  color: var(--color-text-muted);
  display: flex;
}
.faq-arrow svg {
  transition: transform var(--transition);
}

.faq-answer {
  overflow: hidden;
}
.faq-answer[hidden] {
  display: none;
}
.faq-answer-inner {
  display: flex;
  gap: 0.75rem;
  padding: 0 1rem 1.375rem;
}
.faq-a-mark {
  font-size: 1rem;
  font-weight: 900;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.faq-answer p {
  font-size: 0.9375rem;
  color: var(--color-text-sub);
  line-height: 1.8;
}

/* FAQ CTA */
.section-faq-cta {
  background: var(--color-bg-sub);
  padding-block: 3rem;
}
.faq-cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: 800px;
  margin-inline: auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
}
.faq-cta-text {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ----------------------------------------------------------
   11. contact.php — 문의 폼 · 오시는 길
---------------------------------------------------------- */
.section-contact {
  background: var(--color-bg);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 4rem;
  align-items: flex-start;
}

/* contact-info: 왼쪽 안내 + 연락처 정보 */
.contact-info {
  /* 왼쪽 영역 */
}

/* contact-form-wrapper: 오른쪽 폼 래퍼 */
.contact-form-wrapper {
  /* 오른쪽 영역 */
}

/* 연락처 정보 */
.contact-desc {
  color: var(--color-text-sub);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-top: 1rem;
  margin-bottom: 2rem;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  font-size: 0.9375rem;
  color: var(--color-text-sub);
}
.contact-detail-icon {
  flex-shrink: 0;
  margin-top: 0.125rem;
  color: var(--color-primary);
  display: flex;
}
.contact-detail-link {
  color: var(--color-text-sub);
  transition: color var(--transition);
}
.contact-detail-link:hover {
  color: var(--color-primary);
}

/* 문의 폼 */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}
.required {
  color: var(--color-error);
}
.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}
.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(26 86 219 / .12);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
}
.form-submit {
  margin-top: 0.5rem;
}
.form-message {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
}
.form-message.success {
  background: #ecfdf5;
  color: var(--color-success);
  border: 1px solid #a7f3d0;
}
.form-message.error {
  background: #fef2f2;
  color: var(--color-error);
  border: 1px solid #fecaca;
}

/* 오시는 길 */
.section-directions {
  background: var(--color-bg-sub);
}
.directions-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: flex-start;
}
.directions-dl {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.directions-dl-row {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 0.75rem;
}
.directions-dt {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-top: 0.125rem;
}
.directions-dd {
  font-size: 0.9375rem;
  color: var(--color-text-sub);
}
.directions-note {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.map-embed-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.map-embed-wrapper iframe {
  display: block;
  border: none;
}
.map-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem;
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  text-align: center;
  color: var(--color-text-sub);
}

/* ----------------------------------------------------------
   12. 팝업 레이어
---------------------------------------------------------- */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 9900;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.popup-content {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow-lg);
}
.popup-content img {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.popup-close {
  position: absolute;
  top: 0.625rem;
  right: 0.625rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  background: rgba(0,0,0,.5);
  color: #fff;
  border-radius: 50%;
  transition: background var(--transition);
}
.popup-close:hover {
  background: rgba(0,0,0,.75);
}
.popup-text {
  padding: 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-sub);
}
.popup-hide-today {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.25rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  cursor: pointer;
}

/* ----------------------------------------------------------
   푸터
---------------------------------------------------------- */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,.75);
}
.footer-inner {
  padding-block: 3rem 2rem;
}
.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1.5rem;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-logo-img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: .8;
}
.footer-logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
}
.footer-slogan {
  font-size: 0.875rem;
  color: rgba(255,255,255,.5);
  max-width: 300px;
}
.footer-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-sns-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.75);
  transition: background var(--transition), color var(--transition);
}
.footer-sns-link:hover {
  background: var(--color-primary);
  color: #fff;
}
.footer-legal-link {
  font-size: 0.875rem;
  color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.footer-legal-link:hover {
  color: #fff;
}
.footer-legal-link--strong {
  color: rgba(255,255,255,.75);
  font-weight: 600;
}
.footer-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,.1);
  margin-bottom: 1.5rem;
}
.footer-bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-company-info {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: rgba(255,255,255,.5);
  line-height: 1.6;
}
.footer-sep {
  margin-inline: 0.375rem;
  opacity: .4;
}
.footer-email {
  color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.footer-email:hover {
  color: #fff;
}
.footer-copyright {
  font-size: 0.8125rem;
  color: rgba(255,255,255,.4);
  white-space: nowrap;
}

/* ----------------------------------------------------------
   13. 반응형 미디어 쿼리
---------------------------------------------------------- */

/* 태블릿 (1024px 이하) */
@media (max-width: 1024px) {
  :root {
    --section-py: 4rem;
    --container-pad: 1.25rem;
  }

  .intro-layout,
  .main-features-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .intro-img {
    height: 300px;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-block: 3rem;
  }
  .service-item.reverse {
    direction: ltr;
  }
  .service-img {
    height: 260px;
  }

  .features-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* card-grid--3: 정본 (product.php, index.php) — product-grid: 구 선택자 */
  .card-grid--3,
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  /* card-grid--4: 4열 그리드 태블릿 처리 */
  .card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .directions-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* 모바일 (768px 이하) */
@media (max-width: 768px) {
  :root {
    --section-py: 3rem;
    --header-h: 60px;
  }

  /* 모바일: backdrop-filter 제거 (fixed 자식 containing block 문제 방지) */
  .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: #fff;
  }

  /* 헤더 — 모바일 사이드바 */
  .gnb {
    display: flex;
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    width: 280px;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 1rem 0;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 850;
    box-shadow: var(--shadow-lg);
    visibility: hidden;
  }
  .gnb.open {
    transform: translateX(0);
    visibility: visible;
  }
  .hamburger {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-dropdown {
    width: 100%;
  }
  .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0;
    display: none;
  }
  .nav-dropdown.open .dropdown-menu {
    display: block;
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    min-width: 0;
  }
  .dropdown-menu::before {
    display: none;
  }
  .dropdown-item {
    padding: 0.75rem 1.25rem 0.75rem 2.25rem;
    background: var(--color-gray-100);
    border-bottom: 1px solid var(--color-border);
    white-space: normal;
  }

  /* 페이지 헤더 */
  .page-header {
    padding-block: 3rem 2rem;
  }
  .page-title {
    font-size: 1.75rem;
  }

  /* Hero */
  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Values */
  .values-grid {
    grid-template-columns: 1fr;
  }

  /* Team */
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
  .team-img,
  .team-img-placeholder {
    width: 120px;
    height: 120px;
  }

  /* Timeline */
  .timeline {
    padding-left: 1.5rem;
  }
  .timeline-item {
    grid-template-columns: 4.5rem 1fr;
    gap: 0.75rem;
  }

  /* Product grid */
  .card-grid--3,
  .product-grid {
    grid-template-columns: 1fr;
  }
  .card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Product detail */
  .product-detail-header,
  .product-detail-body {
    padding: 1.25rem;
  }

  /* Board table */
  .col-views {
    display: none;
  }

  /* FAQ CTA */
  .faq-cta-box {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  /* Footer */
  .footer-top {
    flex-direction: column;
    gap: 1.5rem;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

/* 소형 모바일 (480px 이하) */
@media (max-width: 480px) {
  :root {
    --container-pad: 1rem;
    --section-py: 2.5rem;
  }

  .hero-title {
    font-size: 1.875rem;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .product-filter {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 0.375rem;
    margin-inline: calc(var(--container-pad) * -1);
    padding-inline: var(--container-pad);
    padding-bottom: 0.5rem;
    scrollbar-width: none;
  }
  .product-filter::-webkit-scrollbar {
    display: none;
  }
  .filter-tab {
    flex-shrink: 0;
    font-size: 0.8125rem;
    padding: 0.4rem 0.875rem;
    white-space: nowrap;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
  .timeline-year {
    text-align: left;
  }
  .timeline-dot {
    display: none;
  }

  .service-number {
    font-size: 2rem;
  }

  /* 카드 그리드 소형 모바일 */
  .card-grid--2,
  .card-grid--3,
  .card-grid--4 {
    grid-template-columns: 1fr;
  }

  .board-table th:nth-child(1),
  .board-table td:nth-child(1) {
    display: none;
  }
}