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

:root {
  --blue: #27316F;
  --blue-dark: #1B2454;
  --blue-light: #ECEEF5;
  --orange: #FF6B00;
  --orange-hover: #E55E00;
  --gray-50: #F8F9FA;
  --gray-100: #F1F3F5;
  --gray-200: #E9ECEF;
  --gray-300: #DEE2E6;
  --gray-500: #868E96;
  --gray-700: #495057;
  --gray-900: #212529;
  --white: #FFFFFF;
  --shadow: 0 2px 8px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.12);
  --radius: 8px;
  --radius-lg: 12px;
  --max-w: clamp(1600px, 96vw, 2400px);
  --header-h: 72px;
}

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ===== Header ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow .2s;
}
.header.scrolled { box-shadow: var(--shadow); }

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

.logo { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 30px; color: var(--blue); line-height: 1.2; }
.logo img { height: 44px; width: auto; display: block; }
.logo span { display: block; font-size: 18px; font-weight: 500; color: var(--gray-500); letter-spacing: .5px; }
@media (max-width: 640px) {
  .logo img { height: 36px; }
  .logo span { font-size: 16px; }
}

.nav { display: flex; gap: 40px; }
.nav a {
  padding: 8px 16px; border-radius: 6px;
  font-size: 22px; font-weight: 500; color: var(--gray-700);
  transition: all .15s;
}
.nav a:hover, .nav a.active { color: var(--blue); background: var(--blue-light); }

.nav-cta {
  background: var(--orange) !important; color: var(--white) !important;
  font-weight: 600 !important;
}
.nav-cta:hover { background: var(--orange-hover) !important; }

/* Mobile menu */
.menu-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; position: relative;
}
.menu-toggle span {
  display: block; width: 22px; height: 2px; background: var(--gray-900);
  position: absolute; left: 9px; transition: all .2s;
}
.menu-toggle span:nth-child(1) { top: 12px; }
.menu-toggle span:nth-child(2) { top: 19px; }
.menu-toggle span:nth-child(3) { top: 26px; }
.menu-toggle.active span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  margin-top: var(--header-h);
  padding: 80px 0;
  background: var(--blue);
  color: var(--white);
  text-align: center;
}
.hero h1 { font-size: 45px; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.hero p { font-size: 21px; opacity: .85; max-width: 600px; margin: 0 auto 32px; }

.hero-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius);
  font-size: 19px; font-weight: 600; cursor: pointer;
  border: none; transition: all .15s;
}
.btn-primary { background: var(--orange); color: var(--white); }
.btn-primary:hover { background: var(--orange-hover); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.4); }
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.1); }
.btn-blue { background: var(--blue); color: var(--white); }
.btn-blue:hover { background: var(--blue-dark); }

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--gray-50); }
.section-title {
  font-size: 35px; font-weight: 800; text-align: center; margin-bottom: 12px;
  color: var(--gray-900);
}
.section-subtitle {
  font-size: 19px; color: var(--gray-500); text-align: center;
  margin-bottom: 48px;
}

/* ===== Product Cards (Main page) ===== */
.product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: 1100px; margin: 0 auto;
}
.product-card {
  background: var(--white); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow);
  transition: all .2s;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-card-img {
  height: 200px; overflow: hidden; background: var(--gray-100);
  display: flex; align-items: center; justify-content: center;
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; }
.product-card-body {
  padding: 20px;
  display: flex; flex-direction: column;
  flex: 1;
}
.product-card-body h3 { font-size: 21px; font-weight: 700; margin-bottom: 8px; }
.product-card-body p { font-size: 17px; color: var(--gray-500); margin-bottom: 16px; line-height: 1.5; }
.product-card-link {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 17px; font-weight: 600; color: var(--blue);
  margin-top: auto;
}
.product-card-link:hover { gap: 8px; }

/* 라인업 카드 이미지 변형 — 단일/2분할/3분할 (preview-lineup.html 에서 이식) */
.product-card-img--contain { background: #fff; padding: 12px; }
.product-card-img--contain img { object-fit: contain; }

.product-card-img--split,
.product-card-img--triple {
  display: grid; gap: 6px; padding: 10px;
  background: linear-gradient(135deg, #f6f8fb 0%, #eef2f7 100%);
}
.product-card-img--split { grid-template-columns: 1fr 1fr; }
.product-card-img--triple { grid-template-columns: 1fr 1fr 1fr; }
.product-card-img--split img,
.product-card-img--triple img {
  width: 100%; height: 100%; object-fit: contain;
  background: #fff; border-radius: 6px;
  padding: 6px;
}
.img-cell { position: relative; background: #fff; border-radius: 6px; overflow: hidden; }
.img-cell img { width: 100%; height: 100%; object-fit: contain; padding: 6px; display: block; }
.product-card-img--split .img-cell,
.product-card-img--triple .img-cell { height: 100%; }
.img-cell--shrink { display: flex; align-items: center; justify-content: center; padding: 6px; background: #fff; }
.img-cell--shrink img { width: auto; height: auto; max-width: 80%; max-height: 80%; padding: 0; }
@media (max-width: 640px) {
  .product-card-img--triple { grid-template-columns: 1fr 1fr; }
  .product-card-img--triple .img-cell:nth-child(3) { grid-column: 1 / -1; }
}

/* ===== Features ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature-item { text-align: center; padding: 32px 20px; }
.feature-icon {
  width: 64px; height: 64px; margin: 0 auto 16px;
  background: var(--blue-light); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
}
.feature-item h3 { font-size: 21px; font-weight: 700; margin-bottom: 8px; }
.feature-item p { font-size: 17px; color: var(--gray-500); }

/* ===== Product Detail Pages ===== */
.page-hero {
  margin-top: var(--header-h);
  padding: 60px 0;
  background: var(--blue);
  color: var(--white);
}
.page-hero h1 { font-size: 39px; font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 19px; opacity: .85; }

.product-intro {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; padding: 60px 0;
}
.product-intro-text h2 { font-size: 31px; font-weight: 800; margin-bottom: 16px; color: var(--blue); }
.product-intro-text p { margin-bottom: 12px; color: var(--gray-700); }
.product-intro-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.product-intro-img-plain { display: flex; align-items: center; justify-content: center; }
.product-intro-img-plain img { max-width: 100%; height: auto; }
.product-intro-3col { grid-template-columns: 1.5fr 1fr 1fr; gap: 24px; align-items: center; }
.product-intro-3col .product-intro-img,
.product-intro-3col .product-intro-img-plain {
  aspect-ratio: 1 / 1;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}
.product-intro-3col .product-intro-img img,
.product-intro-3col .product-intro-img-plain img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}
.product-intro-3col .product-intro-img-plain img {
  max-width: 78%;
  max-height: 78%;
  transform: perspective(1400px) rotateY(-14deg);
  filter: drop-shadow(18px 22px 14px rgba(0, 0, 0, 0.35));
}

/* Advantages */
.advantages { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.advantage-card {
  background: var(--white); padding: 28px; border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.advantage-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; color: var(--blue); }
.advantage-card p { font-size: 17px; color: var(--gray-500); }

/* Lineup gallery */
.lineup-gallery {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px;
}
.lineup-item {
  background: var(--white); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow);
}
.lineup-item-img {
  height: 200px; overflow: hidden; background: var(--gray-100);
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.lineup-item-img img { max-height: 100%; width: auto; object-fit: contain; }
.lineup-item-body { padding: 16px; }
.lineup-item-body h4 { font-size: 18px; font-weight: 600; margin-bottom: 4px; }
.lineup-item-body p { font-size: 16px; color: var(--gray-500); }

/* Spec Tables */
.spec-table-wrap { overflow-x: auto; margin: 24px 0; border-radius: var(--radius); }
.spec-table {
  width: 100%; border-collapse: collapse; font-size: 17px;
  min-width: 600px;
}
.spec-table thead { background: var(--blue); color: var(--white); }
.spec-table th { padding: 12px 16px; text-align: left; font-weight: 600; white-space: nowrap; }
.spec-table td { padding: 10px 16px; border-bottom: 1px solid var(--gray-200); }
.spec-table tbody tr:hover { background: var(--blue-light); }
.spec-table tbody tr:nth-child(even) { background: var(--gray-50); }
.spec-table tbody tr:nth-child(even):hover { background: var(--blue-light); }

/* Compact spec tables (chiller 탭 내부 사양표) — 모델명·수치 모두 중앙정렬 */
.spec-table-compact th,
.spec-table-compact td,
.spec-table-compact thead th,
.spec-table-compact tbody td,
.spec-table-compact tbody th {
  text-align: center !important;
  vertical-align: middle !important;
}

/* Feature table (특장점) — 항목명/헤더는 중앙정렬, 우측 설명문은 가독성 위해 좌측 유지 */
.spec-table.feature-table th { text-align: center; }
.spec-table.feature-table td:first-child { text-align: center; vertical-align: middle; }

/* Download section */
.download-section {
  text-align: center; padding: 48px; margin: 40px 0;
  background: var(--blue-light); border-radius: var(--radius-lg);
}
.download-section h3 { font-size: 25px; font-weight: 700; margin-bottom: 8px; }
.download-section p { color: var(--gray-500); margin-bottom: 24px; }
.download-list {
  display: flex; flex-direction: column; gap: 12px;
  align-items: stretch; width: fit-content; max-width: 100%; margin: 0 auto;
}
.download-list .btn { min-width: 360px; max-width: 100%; width: 100%; justify-content: center; }
@media (max-width: 600px) {
  .download-list { width: 100%; }
  .download-list .btn { min-width: 0; }
}
.download-buttons {
  display: flex; flex-direction: column; gap: 12px;
  align-items: stretch; width: fit-content; max-width: 100%; margin: 0 auto;
}
.download-buttons .btn { min-width: 360px; max-width: 100%; width: 100%; justify-content: center; }
@media (max-width: 600px) {
  .download-buttons { width: 100%; }
  .download-buttons .btn { min-width: 0; }
}
/* 카탈로그 다운로드 버튼은 다른 CTA보다 얇게 — 보성오빠 260507 그림 9 */
.download-section .btn { padding: 8px 28px; }

/* ===== EHP V6 Features ===== */
.v6-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 24px;
}
.v6-feature {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}
.v6-feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.v6-feature h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue);
  text-align: center;
  padding: 16px 12px 0;
  line-height: 1.4;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.v6-feature-img {
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}
.v6-feature-img img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

/* ===== Outdoor Lineup Modules ===== */
.lineup-module { margin-bottom: 48px; }
.lineup-module:last-child { margin-bottom: 0; }
.lineup-module-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}
.lineup-module > h3,
.lineup-module-header h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--blue);
  padding-left: 12px;
  border-left: 4px solid var(--blue);
}
.energy-grade-badge {
  max-width: 110px;
  height: auto;
  flex-shrink: 0;
}
.spec-table-lineup { min-width: 640px; table-layout: fixed; width: 100%; }
.spec-table-lineup th[scope="row"] {
  background: var(--blue);
  color: var(--white);
  text-align: left;
  white-space: nowrap;
  width: 160px;
  min-width: 160px;
  border-bottom: 1px solid rgba(255,255,255,.15);
}
.spec-table-lineup td {
  text-align: center;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (max-width: 768px) {
  .spec-table-lineup { table-layout: auto; }
  .spec-table-lineup th[scope="row"] { width: auto; min-width: 110px; }
}
.spec-table-lineup tbody tr:nth-child(even) { background: var(--gray-50); }
.spec-table-lineup tbody tr:hover { background: var(--blue-light); }
.spec-table-lineup tbody tr:nth-child(even):hover { background: var(--blue-light); }

/* ===== MULTI S Feature Image ===== */
.multis-feature-image {
  max-width: 640px;
  margin: 0 auto;
}
.multis-feature-image img { width: 100%; height: auto; display: block; }

/* ===== 공조기 키트 ===== */
.ahu-kit-desc {
  max-width: 900px;
  margin: 0 auto 32px;
  text-align: center;
  color: var(--gray-700);
  font-size: 16px;
  line-height: 1.7;
}
.ahu-kit-diagram {
  max-width: 1000px;
  margin: 0 auto 48px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
}
.ahu-kit-diagram img { width: 100%; height: auto; }

.subsection-title {
  font-size: 21px;
  font-weight: 700;
  color: var(--blue);
  margin: 48px 0 24px;
  padding-left: 12px;
  border-left: 4px solid var(--blue);
}
.connection-diagrams {
  display: grid;
  gap: 24px;
}
.connection-diagram {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
}
.connection-diagram figcaption {
  font-size: 17px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 16px;
}
.connection-diagram img { width: 100%; height: auto; }

/* Tabs */
.tabs-wrap { position: relative; margin-bottom: 24px; }
.tabs {
  display: flex; gap: 4px;
  align-items: stretch;
  border-bottom: 2px solid var(--gray-200);
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
  scrollbar-width: thin;
}
@media (max-width: 768px) {
  .tabs-wrap::after {
    content: "›";
    position: absolute;
    right: 0;
    top: 0;
    bottom: 2px;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 8px;
    background: linear-gradient(to right, rgba(255,255,255,0), var(--white) 55%);
    color: var(--blue);
    font-size: 24px;
    font-weight: 700;
    pointer-events: none;
    opacity: 1;
    transition: opacity .2s ease;
    animation: tabsHintBob 1.4s ease-in-out 0s 3;
  }
  .tabs-wrap.at-end::after { opacity: 0; }
}
@keyframes tabsHintBob {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-4px); }
}
.tab-btn {
  flex: 0 0 auto;
  padding: 12px 24px; font-size: 16px; font-weight: 600;
  background: none; border: none; cursor: pointer;
  color: var(--gray-900); border-bottom: 2px solid transparent;
  margin-bottom: -2px; white-space: nowrap; transition: color .15s, border-color .15s;
}
.tab-btn:hover { color: var(--blue); }
.tab-btn.active {
  color: var(--blue);
  background: var(--gray-100);
  border-bottom-color: var(--blue);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Nested tabs — Level 2 (pill style) */
.tabs-l2 {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.tab-btn-l2 {
  padding: 9px 20px;
  font-size: 15px;
  font-weight: 600;
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  cursor: pointer;
  transition: all .15s;
}
.tab-btn-l2:hover { color: var(--blue); border-color: var(--blue); }
.tab-btn-l2.active {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.tab-content-l2 { display: none; }
.tab-content-l2.active { display: block; }

/* Nested tabs — Level 3 (subtle pill) */
.tabs-l3 {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.tab-btn-l3 {
  padding: 7px 16px;
  font-size: 14px;
  font-weight: 500;
  background: var(--white);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  cursor: pointer;
  transition: all .15s;
}
.tab-btn-l3:hover { color: var(--blue); border-color: var(--blue); }
.tab-btn-l3.active {
  background: var(--blue-light);
  color: var(--blue);
  border-color: var(--blue);
}
.tab-content-l3 { display: none; }
.tab-content-l3.active { display: block; }

/* Placeholder for empty tab leaves */
.tab-placeholder {
  padding: 60px 24px;
  text-align: center;
  background: var(--gray-100);
  border: 1px dashed var(--gray-300);
  border-radius: var(--radius-lg);
  color: var(--gray-500);
  font-size: 15px;
}

/* ===== Chiller leaf shared ===== */
.spec-sub {
  color: var(--gray-700);
  font-size: 15px;
  margin-bottom: 24px;
}
.spec-group {
  margin-top: 28px;
}
.spec-group h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 12px;
}
.spec-table-compact {
  font-size: 14px;
}
.spec-table-compact th,
.spec-table-compact td {
  padding: 8px 10px;
  white-space: nowrap;
}
.info-card {
  background: var(--blue-light);
  border-left: 4px solid var(--blue);
  padding: 22px 26px;
  border-radius: var(--radius);
}
.info-card h4 {
  color: var(--blue);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}
.info-card p {
  color: var(--gray-900);
  font-size: 15.5px;
  line-height: 1.7;
}

/* ===== 19DV content ===== */
.chiller-hero-img {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  margin-bottom: 24px;
}
.chiller-hero-img img {
  width: 40%;
  max-width: 100%;
  height: auto;
  display: block;
}
/* chiller-hero-img 다음 h3 의 인라인 margin-top 무력화 — 이미지 위·아래 여백을 대칭으로 */
.chiller-hero-img + h3 {
  margin-top: 0 !important;
}
@media (max-width: 768px) {
  .chiller-hero-img { min-height: 0; padding: 12px; }
  .chiller-hero-img img { width: 95%; }
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.features-grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 768px) {
  .features-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
.feature-col {
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.feature-col-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-700);
  margin: 0;
}
.feature-col h4 {
  color: var(--blue);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 14px;
}
.feature-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.feature-col li {
  position: relative;
  padding-left: 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.feature-col li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--blue);
}

.compressor-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-top: 20px;
}
.compressor-intro--reverse .compressor-intro-text { order: 2; }
.compressor-intro--reverse .compressor-intro-img { order: 1; }
.compressor-intro-text p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray-700);
}
.compressor-intro-img img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}
.screw-air-feature-media,
.scroll-air-feature-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
}
.screw-air-feature-media img,
.scroll-air-feature-media img {
  width: auto;
  max-width: min(100%, 240px);
  max-height: 170px;
  object-fit: contain;
}
.compressor-simple {
  margin-top: 40px;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.compressor-simple h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}
.compressor-simple-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 24px;
  align-items: center;
}
.compressor-simple-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.compressor-simple-grid li {
  position: relative;
  padding-left: 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--gray-700);
}
.compressor-simple-grid li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--blue);
}
.compressor-simple-img img {
  width: 100%;
  height: auto;
}

.compressor-compare {
  margin-top: 32px;
}
.compressor-compare-row {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 28px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--gray-200);
}
.compressor-compare-row:last-child {
  border-bottom: none;
}
.compressor-compare-label h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 12px;
}
.compressor-compare-label p {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--gray-700);
}
.compressor-compare-img img {
  width: 100%;
  height: auto;
}

/* Feature table (wrapping cells, used for 특장점) */
.feature-table th, .feature-table td {
  white-space: normal;
  line-height: 1.7;
  padding: 12px 14px;
  vertical-align: top;
}
.feature-table td:first-child { color: var(--blue); font-weight: 700; }

/* AHRI certification block */
.ahri-cert {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--blue-light);
  border-left: 4px solid var(--blue);
  padding: 20px 24px;
  border-radius: var(--radius);
  margin-top: 16px;
}
.ahri-cert .ahri-logo {
  flex: 0 0 auto;
  width: 120px;
  height: auto;
}
.ahri-cert p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--gray-700);
}
.ahri-cert p a { color: var(--blue); text-decoration: underline; }

@media (max-width: 900px) {
  .ahri-cert { flex-direction: column; gap: 14px; }
  .ahri-cert .ahri-logo { width: 100px; }
  .features-grid { grid-template-columns: 1fr; }
  .compressor-intro,
  .compressor-simple-grid,
  .compressor-compare-row { grid-template-columns: 1fr; }
  .compressor-intro--reverse .compressor-intro-text,
  .compressor-intro--reverse .compressor-intro-img { order: 0; }
  .spec-table-compact { font-size: 13px; }
  .spec-table-compact th,
  .spec-table-compact td { padding: 6px 8px; }
}

/* ===== Inquiry Form ===== */
.inquiry-form {
  max-width: 700px; margin: 0 auto;
  background: var(--white); padding: 40px; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 15px; font-weight: 600; margin-bottom: 6px;
  color: var(--gray-700);
}
.form-group label .required { color: var(--orange); margin-left: 2px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--gray-300);
  border-radius: var(--radius); font-size: 16px; font-family: inherit;
  transition: border-color .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(39,49,111,.15);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { text-align: center; margin-top: 32px; }
.form-submit .btn { width: 100%; justify-content: center; font-size: 18px; padding: 16px; }

.form-consent { margin-top: 28px; }
.form-consent h4 {
  font-size: 15px; font-weight: 700; color: var(--gray-700); margin-bottom: 8px;
}
.form-consent-box {
  background: var(--gray-100); border: 1px solid var(--gray-300);
  border-radius: var(--radius); padding: 16px 18px; font-size: 14px; line-height: 1.7;
  color: var(--gray-700); max-height: 180px; overflow-y: auto;
}
.form-consent-box dl { margin: 0; display: grid; grid-template-columns: 110px 1fr; row-gap: 4px; }
.form-consent-box dt { font-weight: 700; color: var(--gray-900); }
.form-consent-box dd { margin: 0; }
.form-consent-note { margin-top: 10px; font-size: 13px; color: var(--gray-500); }
.form-consent-check {
  display: flex; align-items: center; gap: 8px;
  margin-top: 12px; font-size: 15px; color: var(--gray-700); cursor: pointer;
}
.form-consent-check input[type="checkbox"] {
  width: 18px; height: 18px; accent-color: var(--blue); cursor: pointer; flex-shrink: 0;
}
@media (max-width: 600px) {
  .form-consent-box dl { grid-template-columns: 1fr; }
  .form-consent-box dt { margin-top: 4px; }
}

.form-success {
  display: none; text-align: center; padding: 60px 20px;
}
.form-success h3 { font-size: 25px; font-weight: 700; color: var(--blue); margin-bottom: 12px; }
.form-success p { color: var(--gray-500); }

/* ===== About ===== */
.about-info {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
}
.info-table { width: 100%; }
.info-table tr td { padding: 12px 0; border-bottom: 1px solid var(--gray-200); font-size: 16px; }
.info-table tr td:first-child { font-weight: 600; color: var(--gray-700); width: 140px; }
.map-wrap {
  border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow);
  height: 400px;
}
.map-wrap iframe { width: 100%; height: 100%; border: 0; }

/* ===== Contact Bar ===== */
.contact-bar {
  background: var(--gray-900); color: var(--white); padding: 48px 0;
  text-align: center;
}
.contact-bar h3 { font-size: 25px; font-weight: 700; margin-bottom: 8px; }
.contact-bar p { opacity: .7; margin-bottom: 24px; }
.contact-bar .btn { font-size: 19px; }

/* ===== Footer ===== */
.footer {
  background: var(--gray-900); color: var(--gray-500); padding: 40px 0;
  font-size: 14px; border-top: 1px solid rgba(255,255,255,.05);
}
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; }
.footer-info p { margin-bottom: 4px; }
.footer-info strong { color: var(--gray-300); }
.footer-right { text-align: right; white-space: nowrap; }
.footer-right a { color: var(--gray-500); transition: color .15s; }
.footer-right a:hover { color: var(--white); }

/* ===== Floating Call Button ===== */
.floating-call {
  display: none; position: fixed; bottom: 24px; right: 24px; z-index: 900;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--orange); color: var(--white);
  box-shadow: var(--shadow-lg); border: none; cursor: pointer;
  font-size: 24px; align-items: center; justify-content: center;
  transition: transform .15s;
}
.floating-call:hover { transform: scale(1.1); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .v6-features { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }

  .menu-toggle { display: block; }
  .nav {
    display: none; position: fixed; top: var(--header-h); left: 0; right: 0;
    background: var(--white); flex-direction: column; gap: 4px; padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200); box-shadow: var(--shadow-lg);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 16px; font-size: 24px; }

  .hero { padding: 48px 0; }
  .hero h1 { font-size: 29px; }
  .hero p { font-size: 16px; }

  .section { padding: 36px 0; }
  .section-title { font-size: 25px; }
  .section-subtitle { margin-bottom: 24px; }

  .product-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .product-intro { grid-template-columns: 1fr; gap: 20px; padding: 24px 0; }
  .about-info { grid-template-columns: 1fr; }

  .download-section { padding: 28px 20px; margin: 20px 0; }
  .contact-bar { padding: 32px 0; }

  .v6-features { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .v6-feature h3 { font-size: 15px; min-height: 56px; padding: 14px 10px 0; }
  .lineup-module-header { flex-wrap: wrap; }
  .energy-grade-badge { max-width: 88px; }

  .product-intro-3col { grid-template-columns: 1fr; gap: 24px; }

  .page-hero { padding: 28px 0; }
  .page-hero h1 { font-size: 27px; }
  .page-hero p { font-size: 15px; }

  .inquiry-form { padding: 24px; }

  .footer-inner { flex-direction: column; }
  .footer-right { text-align: left; }

  .floating-call { display: flex; }

  .tabs { gap: 0; }
  .tab-btn { padding: 10px 16px; font-size: 15px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 25px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
}