:root{--build-id:"24f63a46-9189-4704-8c9b-2127e178281e";}
@charset "UTF-8";

/* ========================================
   CSS Variables - C27 (Indigo) + CS13 (중문형)
   ======================================== */
:root {
  --primary: #6366f1;
  --bg: #eef2ff;
  --text: #312e81;
  --accent: #818cf8;
  --heading: #312e81;
  --link: #312e81;
  --radius: 0.5rem;
}

/* ========================================
   Reset & Base - F3 (Windows Core Font Stack)
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", "Malgun Gothic", "Noto Sans KR", -apple-system, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: 0em;
  color: var(--text);
  background-color: var(--bg);
}

/* ========================================
   Typography - H13 + Responsive
   ======================================== */
h1 {
  font-size: clamp(2.2rem, 4vw, 3.125rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
  color: var(--heading);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--heading);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--heading);
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: opacity 0.3s ease;
}

a:hover {
  opacity: 0.7;
}

a:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* ========================================
   Skip Link (Accessibility)
   ======================================== */
.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;
}

/* ========================================
   Header & Navigation - N05
   ======================================== */
header {
  background: rgba(238, 242, 255, 0.95);
  border-bottom: 2px solid var(--primary);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}

.header-container {
  max-width: 1500px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

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

nav a {
  font-weight: 500;
  color: var(--text);
  border-bottom: 3px solid transparent;
  padding: 0.5rem 0;
  transition: border-color 0.3s ease;
}

nav a:hover,
nav a[aria-current="page"] {
  border-bottom-color: var(--primary);
}

.menu-checkbox {
  display: none;
}

.menu-toggle {
  display: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--primary);
}

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

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-top: 2px solid var(--primary);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

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

  nav ul {
    flex-direction: column;
    padding: 1rem 2rem;
    gap: 0;
  }

  nav li {
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
  }

  nav a {
    display: block;
    padding: 1rem 0;
  }
}

/* ========================================
   Container & Layout - S05
   ======================================== */
.container {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 7rem 0;
}

@media (max-width: 768px) {
  section {
    padding: 3rem 0;
  }
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
  background: linear-gradient(135deg, #eef2ff 0%, #ddd6fe 100%);
  padding: 5rem 0;
}

.hero-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  color: var(--text);
}

.cta-group {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.hero-visual svg {
  width: 100%;
  height: auto;
}

@media (max-width: 968px) {
  .hero-section .container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-visual {
    order: -1;
  }
}

/* ========================================
   Buttons - B13
   ======================================== */
.btn-primary,
.btn-secondary {
  display: inline-block;
  border: none;
  border-bottom: 3px solid;
  padding: 0.75rem 0;
  font-weight: 700;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: 0.05em;
}

.btn-primary {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.btn-primary:hover {
  opacity: 1;
  border-bottom-width: 5px;
}

.btn-secondary {
  color: var(--text);
  border-bottom-color: var(--text);
}

.btn-secondary:hover {
  opacity: 1;
  border-bottom-width: 5px;
}

.cta-buttons {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

/* ========================================
   Content Sections
   ======================================== */
.intro-section,
.features-section,
.details-section,
.cta-section,
.content-section {
  background: #fff;
}

.intro-section:nth-child(even),
.details-section:nth-child(even) {
  background: var(--bg);
}

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

/* ========================================
   Features Grid - K13
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5rem;
  margin-top: 3rem;
}

.feature-card {
  border-radius: 0.5rem;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
  padding: 2rem;
  background: #fff;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.15);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  margin-bottom: 1rem;
  color: var(--primary);
}

@media (max-width: 1200px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ========================================
   Details Section
   ======================================== */
.details-content {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-top: 3rem;
}

.detail-item {
  padding: 2rem;
  background: #fff;
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
}

.detail-item h3 {
  color: var(--primary);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
}

.cta-section h2,
.cta-section p {
  color: #fff;
}

.cta-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta-section .btn-primary,
.cta-section .btn-secondary {
  color: #fff;
  border-bottom-color: #fff;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
  background: linear-gradient(135deg, #eef2ff 0%, #ddd6fe 100%);
  padding: 4rem 0;
  text-align: center;
}

.page-subtitle {
  font-size: 1.125rem;
  color: var(--text);
  opacity: 0.9;
}

/* ========================================
   Content Blocks
   ======================================== */
.content-block,
.method-block,
.feature-detail {
  margin-bottom: 4rem;
  padding: 2rem;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.content-block:last-child,
.method-block:last-child,
.feature-detail:last-child {
  margin-bottom: 0;
}

.feature-icon-large {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.faq-item {
  padding: 2rem;
  background: #fff;
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.faq-item h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

/* ========================================
   Resource Categories
   ======================================== */
.resource-category {
  margin-bottom: 4rem;
  padding: 2rem;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.resource-category h2 {
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.resource-category:last-child {
  margin-bottom: 0;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.contact-card {
  padding: 3rem;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
  text-align: center;
}

.contact-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.contact-card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.contact-card p {
  margin-bottom: 0.5rem;
}

.contact-desc {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 1rem;
}

.contact-message {
  padding: 3rem;
  background: var(--bg);
  border-radius: var(--radius);
  text-align: center;
}

@media (max-width: 768px) {
  .contact-info {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ========================================
   Footer
   ======================================== */
footer {
  background: var(--text);
  color: #fff;
  padding: 3rem 0 1rem;
}

.footer-container {
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-brand p {
  margin-bottom: 0.5rem;
}

.footer-contact p {
  margin-bottom: 0.5rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: #fff;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: 1500px;
  margin: 0 auto;
  padding: 1.5rem 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ========================================
   Document Pages (Privacy/Terms)
   ======================================== */
.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;
}

.doc-container a {
  color: var(--primary);
  text-decoration: underline;
}

/* ========================================
   Responsive Utilities
   ======================================== */
@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }
}