:root{--build-id:"f1bf7537-8673-4c52-9da3-e1a3c51719c8";}
/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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: 0em;
  color: #1a1a1a;
  background: #ffffff;
}

/* 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: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.menu-checkbox {
  display: none;
}

.menu-toggle {
  display: none;
  font-size: 1.8rem;
  color: #ffffff;
  cursor: pointer;
  background: none;
  border: none;
}

nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
}

nav a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background 0.3s;
}

nav a:hover,
nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.15);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #34495e;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
  }

  .menu-checkbox:checked ~ nav {
    max-height: 500px;
  }

  nav ul {
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
  }

  nav a {
    display: block;
    padding: 1rem 2rem;
  }
}

/* Typography - H15 */
h1 {
  font-size: clamp(1.75rem, 1.5rem + 1.25vw, 3rem);
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #1a1a1a;
}

h2 {
  font-size: clamp(1.4rem, 1.2rem + 1vw, 2.4rem);
  line-height: 1.3;
  font-weight: 600;
  margin-bottom: 0.875rem;
  color: #2c3e50;
}

h3 {
  font-size: clamp(1.225rem, 1.05rem + 0.875vw, 2.1rem);
  line-height: 1.4;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: #34495e;
}

p {
  margin-bottom: 1rem;
}

/* Layout - L28 */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.hero {
  background: linear-gradient(135deg, #0369a1 0%, #0284c7 100%);
  color: #ffffff;
  padding: 5rem 2rem;
  text-align: center;
}

.hero h1 {
  color: #ffffff;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  opacity: 0.95;
}

/* Sections - S07 */
.section {
  padding: 4rem 2rem;
}

.section:nth-child(even) {
  background: #f8fafc;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-content {
  max-width: 900px;
  margin: 0 auto;
}

/* Cards - K15 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.card {
  background: #ffffff;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s;
}

.card:hover {
  border-color: #0369a1;
  box-shadow: 0 8px 24px rgba(3, 105, 161, 0.15);
  transform: translateY(-4px);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.card h3 {
  margin-bottom: 1rem;
}

/* Buttons - B15 */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: #0369a1;
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s;
  border: 2px solid #0369a1;
}

.btn:hover {
  background: #025a87;
  border-color: #025a87;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(3, 105, 161, 0.3);
}

.btn-secondary {
  background: transparent;
  color: #0369a1;
  border: 2px solid #0369a1;
}

.btn-secondary:hover {
  background: #0369a1;
  color: #ffffff;
}

/* Lists */
.feature-list {
  list-style: none;
  margin: 2rem 0;
}

.feature-list li {
  padding: 1rem 0;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before {
  content: "✓";
  color: #0369a1;
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* FAQ */
.faq-item {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.faq-question {
  font-weight: 600;
  color: #0369a1;
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.faq-answer {
  color: #475569;
  line-height: 1.7;
}

/* Contact */
.contact-info {
  background: #f8fafc;
  border-radius: 12px;
  padding: 2rem;
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid #e2e8f0;
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-icon {
  font-size: 1.5rem;
  color: #0369a1;
}

/* Footer */
footer {
  background: #1e293b;
  color: #cbd5e1;
  padding: 3rem 2rem 1.5rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: #ffffff;
}

.copyright {
  font-size: 0.875rem;
  opacity: 0.8;
  padding-top: 1.5rem;
  border-top: 1px solid #334155;
}

/* Document Container */
.doc-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 2rem;
  text-align: center;
}

.doc-container h1 {
  margin-bottom: 2rem;
}

.doc-container p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 3rem 1.5rem;
  }

  .section {
    padding: 3rem 1.5rem;
  }

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

  .container {
    padding: 0 1.5rem;
  }
}