:root{--build-id:"448f6ae5-7738-4ae0-8cde-a6e3670ee7d4";}
/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  font-size: 16px;
  scroll-behavior: smooth;
}
body {
  font-family: system-ui, "Helvetica Neue", Arial, "Noto Sans KR", "Malgun Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--text);
  background-color: var(--bg);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--link);
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}

/* Color Variables - C08 */
:root {
  --primary: #0369a1;
  --bg: #e0f2fe;
  --text: #075985;
  --accent: #38bdf8;
  --heading: #075985;
  --link: #075985;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  text-decoration: none;
  z-index: 100;
}
.skip-link:focus {
  top: 0;
}

/* Focus Styles */
a:focus-visible,
input:focus-visible,
label:focus-visible {
  outline: 3px solid #0066cc;
  outline-offset: 2px;
}

/* Header - N15 */
header {
  background-color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-container {
  max-width: 1350px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}
.menu-checkbox {
  display: none;
}
.menu-toggle {
  display: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--text);
}
nav ul {
  display: flex;
  gap: 0.5rem;
}
nav ul li a {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  background-color: var(--bg);
  border-radius: 0.375rem;
  font-weight: 500;
  color: var(--text);
  transition: all 0.3s;
}
nav ul li a:hover,
nav ul li a[aria-current="page"] {
  background-color: var(--primary);
  color: #fff;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
  }
  .menu-checkbox:checked ~ nav {
    max-height: 500px;
  }
  nav ul {
    flex-direction: column;
    padding: 1rem;
    gap: 0.75rem;
  }
  nav ul li a {
    display: block;
    text-align: center;
  }
}

/* Main Layout - S11 */
main {
  max-width: 1350px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
section {
  padding: 5.75rem 0;
}
.section-gap {
  display: flex;
  flex-direction: column;
  gap: 3.75rem;
}

/* Typography - H04 */
h1 {
  font-size: clamp(2.0625rem, 3.5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
  color: var(--heading);
  margin-bottom: 1.5rem;
}
h2 {
  font-size: clamp(1.925rem, 2.5vw, 2.0625rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
  color: var(--heading);
  margin-bottom: 1.25rem;
}
h3 {
  font-size: clamp(1.5125rem, 1.85vw, 1.65rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
  color: var(--heading);
  margin-bottom: 1rem;
}
p {
  margin-bottom: 1rem;
}

/* Hero Section - L12 */
.hero {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #0369a1 0%, #38bdf8 100%);
  color: #fff;
  padding: 4rem 2rem;
  border-radius: 1rem;
  margin-bottom: 3.75rem;
}
.hero-content {
  max-width: 800px;
  z-index: 2;
}
.hero h1 {
  color: #fff;
}

/* Button - B04 */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  font-weight: 600;
  text-transform: uppercase;
  background-color: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}
.btn:hover {
  background-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.btn-white {
  background-color: #fff;
  color: var(--primary);
}
.btn-white:hover {
  background-color: var(--bg);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

/* Card - K04 */
.card {
  background: #fff;
  border-radius: 0.75rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  padding: 1.75rem;
  transition: all 0.3s;
}
.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  transform: translateY(-4px);
}
.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

/* Icon Grid - L12 */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  text-align: center;
}
.icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.icon-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

/* Steps - CS04 */
.steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.step-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.step-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}
.step-content h3 {
  margin-top: 0.25rem;
}

/* Case Study */
.case-study {
  background: #fff;
  border-radius: 0.75rem;
  padding: 2.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Contact Section */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 600px;
  margin: 0 auto;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: #fff;
  border-radius: 0.75rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}
.contact-icon {
  font-size: 1.75rem;
  color: var(--primary);
}

/* Footer */
footer {
  background-color: var(--primary);
  color: #fff;
  padding: 3rem 1.5rem 2rem;
  margin-top: 5.75rem;
}
.footer-container {
  max-width: 1350px;
  margin: 0 auto;
  text-align: center;
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.footer-links a {
  color: #fff;
  font-size: 0.9rem;
}
.footer-links a:hover {
  text-decoration: underline;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 1.5rem;
  font-size: 0.875rem;
  opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
  section {
    padding: 3rem 0;
  }
  .hero {
    min-height: 400px;
    padding: 3rem 1.5rem;
  }
  .grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
  .step-item {
    flex-direction: column;
    text-align: center;
  }
}

/* Document Container */
.doc-container {
  max-width: 800px;
  margin: 5rem auto;
  padding: 2rem;
  text-align: center;
  background: #fff;
  border-radius: 0.75rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}