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

:root {
  --navy:       #0a2d5e;
  --navy-mid:   #1a4f9f;
  --navy-light: #2e7dd1;
  --navy-pale:  #e8f1fb;
  --gold:       #f0a500;
  --gold-light: #fff3cc;
  --text:       #1a1a1a;
  --text-mid:   #444;
  --text-gray:  #777;
  --border:     #e5e8ec;
  --bg-gray:    #f5f7fa;
  --white:      #fff;
}

body {
  font-family: 'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ════════════════════════════
   헤더
════════════════════════════ */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  background: var(--navy);
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

.header-top {
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-top-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
  font-size: 12px;
  color: rgba(255,255,255,0.55);
}

.header-main {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

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

.logo-badge {
  background: var(--white);
  color: var(--navy);
  font-weight: 900;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 1px;
}

.logo-name {
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
}

/* GNB */
.gnb > ul {
  display: flex;
  list-style: none;
}

.gnb > ul > li {
  position: relative;
}

.gnb > ul > li > a {
  display: block;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  font-weight: 500;
  padding: 0 20px;
  height: 64px;
  line-height: 64px;
  transition: color 0.2s;
}

.gnb > ul > li:hover > a,
.gnb > ul > li > a.active {
  color: var(--white);
  font-weight: 700;
}

.sub-menu {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  min-width: 160px;
  background: var(--white);
  border-top: 2px solid var(--navy);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  list-style: none;
  z-index: 100;
}

.gnb > ul > li:hover .sub-menu { display: block; }

.sub-menu li a {
  display: block;
  padding: 11px 18px;
  font-size: 14px;
  color: var(--text-mid);
  border-bottom: 1px solid #f0f0f0;
  transition: background 0.15s, color 0.15s;
}

.sub-menu li a:hover {
  background: var(--navy-pale);
  color: var(--navy);
}

.header-cta {
  background: var(--navy);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 9px 22px;
  border-radius: 6px;
  transition: background 0.2s;
  white-space: nowrap;
}

.header-cta:hover { background: var(--navy-mid); }

/* ════════════════════════════
   슬라이더
════════════════════════════ */
.slider {
  position: relative;
  height: 72vh;
  min-height: 520px;
  max-height: 780px;
  overflow: hidden;
  margin-top: 98px;
}

.slide-track {
  position: relative;
  height: 100%;
}

.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.slide.active { opacity: 1; }

.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(10,45,94,0.88) 0%, rgba(10,45,94,0.35) 100%);
}

.slide-content {
  position: relative;
  z-index: 1;
  color: var(--white);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 64px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.slide-sub {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--gold);
  margin-bottom: 18px;
  font-weight: 600;
  text-transform: uppercase;
}

.slide-content h2 {
  font-size: 50px;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 18px;
}

.slide-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.78);
  margin-bottom: 36px;
}

.slide-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.slide-btn-primary {
  display: inline-block;
  background: var(--gold);
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: 6px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.slide-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(240,165,0,0.4);
}

.slide-btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 26px;
  border: 2px solid rgba(255,255,255,0.55);
  border-radius: 6px;
  transition: border-color 0.2s, background 0.2s;
}

.slide-btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.08);
}

.slide-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  cursor: pointer;
  transition: background 0.3s, width 0.3s;
}

.dot.active {
  background: var(--gold);
  width: 24px;
  border-radius: 4px;
}

.slide-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--white);
  font-size: 18px;
  width: 44px; height: 44px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.slide-arrow:hover { background: rgba(255,255,255,0.22); }
.slide-arrow.prev { left: 24px; }
.slide-arrow.next { right: 24px; }

/* ════════════════════════════
   카테고리 탭
════════════════════════════ */
.cat-section {
  background: var(--white);
  border-bottom: 1px solid var(--border);
}

.cat-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}

.cat-inner::-webkit-scrollbar { display: none; }

.cat-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 22px 28px;
  color: var(--text-mid);
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 500;
}

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

.cat-svg {
  width: 36px; height: 36px;
  color: inherit;
}

/* ════════════════════════════
   안내 카드 3개
════════════════════════════ */
.guide-section {
  background: var(--bg-gray);
  padding: 32px 24px;
}

.guide-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.guide-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.guide-card:hover {
  box-shadow: 0 4px 18px rgba(0,0,0,0.08);
  border-color: var(--navy-light);
}

.guide-icon-wrap {
  width: 44px; height: 44px;
  background: var(--navy-pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.guide-icon-wrap svg {
  width: 24px; height: 24px;
  color: var(--navy);
  stroke: var(--navy);
}

.guide-text {
  flex: 1;
}

.guide-text strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 3px;
}

.guide-text span {
  font-size: 13px;
  color: var(--text-gray);
}

.guide-arrow {
  font-size: 18px;
  color: var(--text-gray);
  transition: color 0.2s, transform 0.2s;
}

.guide-card:hover .guide-arrow {
  color: var(--navy);
  transform: translateX(3px);
}

/* ════════════════════════════
   제품소개
════════════════════════════ */
.products-section {
  padding: 72px 24px;
  background: var(--white);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
}

.section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--navy-light);
  margin-bottom: 6px;
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--navy);
}

.section-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy-mid);
  padding-bottom: 2px;
  border-bottom: 1px solid var(--navy-mid);
  transition: color 0.2s;
}

.section-more:hover { color: var(--navy); }

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

.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: block;
  transition: box-shadow 0.25s, transform 0.25s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(10,45,94,0.12);
  border-color: transparent;
}

.product-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-gray);
}

.product-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.4s ease;
  filter: brightness(1.04) contrast(1.08) saturate(0.88);
}

.product-card:hover .product-img-wrap img {
  transform: scale(1.06);
  filter: brightness(1.1) contrast(1.1) saturate(1);
}

.product-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--navy);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.product-info {
  padding: 18px 18px 20px;
}

.product-en {
  font-size: 11px;
  color: var(--navy-light);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  font-weight: 500;
}

.product-info h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.product-spec {
  font-size: 12px;
  color: var(--text-gray);
  margin-bottom: 14px;
  line-height: 1.5;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--navy-mid);
  transition: gap 0.2s, color 0.2s;
}

.product-card:hover .product-link {
  gap: 8px;
  color: var(--navy);
}

/* ════════════════════════════
   프로모션 배너
════════════════════════════ */
.promo-section {
  padding: 0 24px 64px;
  background: var(--white);
}

.promo-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.promo-card {
  border-radius: 14px;
  padding: 48px 44px;
  min-height: 220px;
  display: flex;
  align-items: center;
}

.promo-navy {
  background: linear-gradient(135deg, var(--navy) 0%, #1a4f9f 100%);
}

.promo-gold {
  background: linear-gradient(135deg, #c47f00 0%, var(--gold) 100%);
}

.promo-text .promo-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.promo-navy .promo-label { color: rgba(255,255,255,0.55); }
.promo-gold .promo-label { color: rgba(10,45,94,0.55); }

.promo-text h3 {
  font-size: 28px;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 10px;
}

.promo-navy .promo-text h3 { color: var(--white); }
.promo-gold .promo-text h3 { color: var(--navy); }

.promo-text p {
  font-size: 14px;
  margin-bottom: 24px;
}

.promo-navy .promo-text p { color: rgba(255,255,255,0.7); }
.promo-gold .promo-text p { color: rgba(10,45,94,0.7); }

.promo-btn {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  padding: 11px 24px;
  border-radius: 6px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.promo-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.promo-btn-white {
  background: var(--white);
  color: var(--navy);
}

.promo-btn-dark {
  background: var(--navy);
  color: var(--white);
}

/* ════════════════════════════
   고객센터
════════════════════════════ */
.customer-section {
  background: var(--bg-gray);
  padding: 72px 24px;
  border-top: 1px solid var(--border);
}

.cs-wrap {
  display: flex;
  gap: 0;
  align-items: stretch;
}

.cs-left {
  flex: 1;
  padding-right: 60px;
}

.cs-left .section-title {
  margin-bottom: 12px;
}

.cs-desc {
  font-size: 15px;
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 28px;
}

.cs-btn {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 6px;
  transition: background 0.2s, transform 0.2s;
}

.cs-btn:hover {
  background: var(--navy-mid);
  transform: translateY(-1px);
}

.cs-divider {
  width: 1px;
  background: var(--border);
  margin: 0 60px;
  flex-shrink: 0;
}

.cs-right { flex: 1.2; }

.cs-phone-block {
  margin-bottom: 24px;
}

.cs-tel-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--navy-light);
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.cs-phone {
  display: block;
  font-size: 40px;
  font-weight: 900;
  color: var(--navy);
  letter-spacing: -1px;
  line-height: 1;
}

.cs-info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cs-info-list li {
  display: flex;
  gap: 16px;
  font-size: 14px;
  color: var(--text-mid);
}

.info-label {
  font-weight: 700;
  color: var(--text);
  min-width: 56px;
}

/* ════════════════════════════
   수치 통계
════════════════════════════ */
.stats-section {
  background: var(--navy);
  padding: 48px 24px;
}

.stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
}

.stat-item {
  padding: 20px;
  border-right: 1px solid rgba(255,255,255,0.12);
}

.stat-item:last-child { border-right: none; }

.stat-item strong {
  display: block;
  font-size: 42px;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-item strong span {
  font-size: 22px;
  font-weight: 600;
  color: var(--gold);
}

.stat-item > span {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* ════════════════════════════
   푸터
════════════════════════════ */
footer {
  background: #111c2d;
  color: rgba(255,255,255,0.5);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.footer-nav {
  display: flex;
  gap: 24px;
}

.footer-nav a {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

.footer-nav a:hover { color: var(--white); }

.footer-bottom {
  padding: 20px 24px;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  margin-bottom: 4px;
}

.copyright {
  font-size: 11px;
  color: rgba(255,255,255,0.2);
}

/* ════════════════════════════
   반응형
════════════════════════════ */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .promo-inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header-top { display: none; }
  .slider { margin-top: 64px; height: 60vh; }
  .slide-content { padding: 0 24px; }
  .slide-content h2 { font-size: 30px; }
  .cat-tab { padding: 18px 16px; font-size: 13px; }
  .guide-inner { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-wrap { flex-direction: column; }
  .cs-divider { width: 100%; height: 1px; margin: 32px 0; }
  .cs-left { padding-right: 0; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .gnb { display: none; }
  .header-cta { display: none; }
  .footer-top { flex-direction: column; gap: 16px; }
  .footer-nav { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .promo-card { padding: 36px 28px; }
  .promo-text h3 { font-size: 22px; }
}