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

:root {
  --bg: #f5f7f6;
  --white: #ffffff;
  --line: #e1e7e4;
  --text: #172033;
  --sub: #5b6675;
  --green: #006b3f;
  --green-dark: #004f31;
  --green-light: #eef8f3;
  --navy: #132843;
  --shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, "Noto Sans KR", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  background: transparent;
}

img {
  display: block;
  width: 100%;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #e5e7eb;
}

.nav {
  max-width: 1240px;
  height: 84px;
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: 170px 1fr 130px;
  align-items: center;
  gap: 24px;
}

.logo-img {
  width: 128px;
  height: 62px;
  object-fit: contain;
  object-position: left center;
}

.nav-menu {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.menu-btn {
  color: #111827;
  font-size: 15px;
  font-weight: 800;
  transition: color 0.2s ease;
}

.menu-btn:hover,
.menu-btn.active {
  color: var(--green);
}

.nav-button {
  height: 48px;
  border-radius: 12px;
  background: var(--green);
  color: #ffffff;
  font-size: 15px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero {
  background:
    radial-gradient(circle at right top, rgba(0, 107, 63, 0.12), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #f5f7f6 100%);
}

.hero-inner {
  max-width: 1240px;
  min-height: 600px;
  margin: 0 auto;
  padding: 72px 28px 68px;
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-content,
.hero-visual,
.content-shell,
.summary-section {
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.eyebrow {
  color: var(--green);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.05em;
  margin-bottom: 18px;
}

.hero-content h1 {
  color: var(--navy);
  font-size: 52px;
  line-height: 1.18;
  letter-spacing: -2px;
  word-break: keep-all;
  margin-bottom: 24px;
}

.hero-desc {
  max-width: 680px;
  color: #3f4b5b;
  font-size: 18px;
  line-height: 1.85;
  word-break: keep-all;
  margin-bottom: 16px;
}

.hero-note {
  max-width: 680px;
  color: #6b7280;
  font-size: 14px;
  line-height: 1.7;
  word-break: keep-all;
  margin-bottom: 32px;
}

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

.primary-btn,
.secondary-btn {
  height: 50px;
  padding: 0 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.primary-btn {
  background: var(--green);
  color: #ffffff;
}

.secondary-btn {
  background: #ffffff;
  color: var(--green);
  border: 1px solid rgba(0, 107, 63, 0.26);
}

.hero-visual {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  min-height: 420px;
  background: #dce4df;
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.16);
}

.hero-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  object-position: center;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 20, 34, 0.04), rgba(8, 20, 34, 0.34));
}

.visual-card {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 26px;
  z-index: 2;
  padding: 22px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
}

.visual-card span {
  display: block;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 8px;
}

.visual-card strong {
  display: block;
  color: var(--navy);
  font-size: 23px;
  line-height: 1.35;
  word-break: keep-all;
}

.summary-section {
  max-width: 1240px;
  margin: -32px auto 0;
  padding: 0 28px 44px;
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.summary-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px 22px;
  box-shadow: var(--shadow);
}

.summary-card span {
  display: block;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 8px;
}

.summary-card strong {
  color: var(--navy);
  font-size: 20px;
  line-height: 1.4;
  word-break: keep-all;
}

.content-section {
  padding: 0 28px 56px;
}

.content-shell {
  max-width: 1240px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 44px;
  box-shadow: var(--shadow);
  min-height: 540px;
}

.content-panel {
  display: none;
}

.content-panel.active {
  display: block;
  animation: panelFadeUp 0.36s ease both;
}

@keyframes panelFadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel-header {
  margin-bottom: 34px;
}

.panel-kicker {
  color: var(--green);
  font-size: 14px;
  font-weight: 900;
  margin-bottom: 10px;
}

.panel-header h2 {
  color: var(--navy);
  font-size: 40px;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 14px;
}

.panel-header p {
  max-width: 920px;
  color: #55606f;
  font-size: 17px;
  line-height: 1.8;
  word-break: keep-all;
}

.two-column-grid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 22px;
  margin-bottom: 22px;
}

.three-column-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 22px;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.info-card,
.image-card,
.step-card,
.address-item,
.product-card {
  background: #f9fafb;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
}

.info-card.large {
  padding: 28px;
}

.accent-card {
  background: linear-gradient(135deg, #eef8f3, #ffffff);
  border-color: rgba(0, 107, 63, 0.2);
}

.info-card h3,
.address-item h3,
.step-card h3,
.product-card h3 {
  color: var(--navy);
  font-size: 22px;
  margin-bottom: 12px;
}

.info-card p,
.address-item p,
.step-card p,
.info-card small,
.product-card p {
  color: #55606f;
  font-size: 15px;
  word-break: keep-all;
}

.info-card small {
  display: block;
  margin-top: 6px;
}

.image-card {
  padding: 0;
  overflow: hidden;
  min-height: 320px;
}

.image-card img {
  height: 100%;
  object-fit: cover;
}

.info-list p {
  color: #55606f;
  font-size: 15px;
  margin-bottom: 8px;
}

.info-list strong {
  display: inline-block;
  min-width: 126px;
  color: var(--green);
}

.bullet-list {
  margin-top: 18px;
}

.bullet-list p {
  margin-bottom: 10px;
}

.address-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.step-card span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--green-light);
  color: var(--green);
  font-size: 14px;
  font-weight: 900;
  margin-bottom: 14px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 22px;
}

.product-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.product-card span {
  display: block;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 6px;
}

.product-image {
  height: 160px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
}

.tech-slide-card {
  position: relative;
  background: #ffffff;
  min-height: 360px;
}

.tech-slide-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 18px;
  background: #ffffff;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.tech-slide-card img.fade {
  opacity: 0;
  transform: scale(0.98);
}

.slide-indicator {
  position: absolute;
  right: 18px;
  bottom: 18px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(19, 40, 67, 0.88);
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
}

.image-gallery.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.image-gallery.three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.sub-title {
  margin-top: 24px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.contact-actions a {
  padding: 12px 18px;
  border-radius: 10px;
  background: var(--green);
  color: #ffffff;
  font-weight: 800;
}

.case-highlight {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}

.case-highlight div {
  padding: 24px;
  border-radius: 20px;
  background: #f9fafb;
  border: 1px solid var(--line);
}

.case-highlight span {
  display: block;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 8px;
}

.case-highlight strong {
  display: block;
  color: var(--navy);
  font-size: 24px;
  line-height: 1.35;
  margin-bottom: 8px;
  word-break: keep-all;
}

.case-highlight p {
  color: #55606f;
  font-size: 15px;
  word-break: keep-all;
}

.case-table-wrap {
  overflow-x: auto;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #ffffff;
}

.case-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 880px;
}

.case-table th {
  background: var(--navy);
  color: #ffffff;
  padding: 15px 14px;
  font-size: 14px;
  font-weight: 900;
  text-align: center;
}

.case-table td {
  padding: 14px;
  border-bottom: 1px solid #e5e7eb;
  color: #334155;
  font-size: 15px;
  text-align: center;
}

.case-table tbody tr:last-child td {
  border-bottom: 0;
}

.case-table tbody tr:nth-child(even) {
  background: #f8fafc;
}

.case-table .saving {
  color: #dc2626;
  font-weight: 900;
}

.notice-text {
  margin-top: 18px;
  color: #5f6b79;
  font-size: 14px;
  word-break: keep-all;
}

.footer {
  background: #182536;
  color: #d7dde5;
  padding: 24px 28px;
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.fade-out {
  opacity: 0;
  transform: translateY(12px);
}

.image-change {
  animation: imageZoom 0.38s ease both;
}

@keyframes imageZoom {
  from {
    opacity: 0.5;
    transform: scale(0.985);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 1080px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 44px;
  }

  .summary-section {
    grid-template-columns: 1fr 1fr;
    margin-top: 0;
  }

  .two-column-grid,
  .three-column-grid,
  .step-grid,
  .address-box,
  .image-gallery.two,
  .image-gallery.three,
  .product-grid,
  .case-highlight {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav {
    grid-template-columns: 150px 1fr;
  }

  .nav-menu {
    display: none;
  }

  .nav-button {
    justify-self: end;
  }

  .hero-inner {
    padding: 48px 20px;
  }

  .hero-content h1 {
    font-size: 36px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-visual,
  .hero-visual img {
    min-height: 300px;
    height: 300px;
  }

  .summary-section,
  .content-section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .summary-section,
  .two-column-grid,
  .three-column-grid,
  .step-grid,
  .address-box,
  .image-gallery.two,
  .image-gallery.three,
  .product-grid,
  .case-highlight {
    grid-template-columns: 1fr;
  }

  .content-shell {
    padding: 26px;
  }

  .panel-header h2 {
    font-size: 32px;
  }

  .image-card {
    min-height: 240px;
  }

  .tech-slide-card {
    min-height: 280px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .nav {
    height: 74px;
    padding: 0 18px;
    grid-template-columns: 120px 1fr;
  }

  .logo-img {
    width: 112px;
    height: 54px;
  }

  .nav-button {
    width: 96px;
    height: 42px;
    font-size: 13px;
  }

  .hero-content h1 {
    font-size: 31px;
  }

  .hero-actions {
    align-items: stretch;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
  }

  .visual-card {
    left: 18px;
    right: 18px;
    bottom: 18px;
    padding: 18px;
  }

  .visual-card strong {
    font-size: 19px;
  }

  .content-shell {
    padding: 22px;
    border-radius: 22px;
  }

  .panel-header h2 {
    font-size: 28px;
  }

  .info-card h3,
  .address-item h3,
  .step-card h3,
  .product-card h3 {
    font-size: 20px;
  }
}