:root{--build-id:"0f75c7f9-d42e-49bf-91b9-f0e0c09e4bd3";}
/* L29: Asymmetric Grid with Sidebar */
/* C34: Warm Neutral Palette */
/* T17: Refined Serif Typography */
/* B18: Shadow Lift Buttons */
/* N05: Sticky Top with Dropdown */
/* K18: Elevated Shadow Cards */
/* S09: Full Width Sections with Alternating Backgrounds */
/* H18: Responsive clamp(2.4rem, 4vw + 1.2rem, 3.8rem) */
/* F3: Windows Core Font Stack */
/* CS18: Formal Tone with Polite Vocabulary */

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* F3: Windows Core Font Stack */
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);
}

/* C34: Warm Neutral Color Palette */
:root {
  --primary: #a89484;
  --bg: #faf8f6;
  --surface: #ffffff;
  --text: #3d3935;
  --accent: #d4c3b8;
}

/* Accessibility: 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;
}

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

/* N05: Sticky Top Navigation with Dropdown */
header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-container {
  max-width: 1200px;
  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);
  text-decoration: none;
}

.menu-checkbox {
  display: none;
}

.menu-toggle {
  display: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--primary);
}

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

nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

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

  nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--surface);
    border-top: 1px solid var(--accent);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .menu-checkbox:checked ~ nav {
    max-height: 400px;
  }

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

  nav li {
    border-bottom: 1px solid var(--accent);
  }

  nav a {
    display: block;
    padding: 1rem 1.5rem;
  }
}

/* H18: Responsive Heading Sizes */
h1 {
  font-size: clamp(2.4rem, 4vw + 1.2rem, 3.8rem);
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.8rem, 3vw + 0.9rem, 2.85rem);
  line-height: 1.3;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.35rem, 2.25vw + 0.675rem, 2.14rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
}

/* Main Content */
main {
  min-height: 60vh;
}

/* S09: Full Width Sections with Alternating Backgrounds */
section {
  padding: 4rem 1.5rem;
}

section:nth-child(even) {
  background-color: var(--bg);
}

section:nth-child(odd) {
  background-color: var(--surface);
}

.hero-section {
  background: linear-gradient(135deg, var(--surface) 0%, var(--bg) 100%);
  text-align: center;
  padding: 5rem 1.5rem;
}

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

.hero-content p {
  font-size: 1.1rem;
  margin: 1.5rem 0;
  color: var(--text);
}

.hero-content svg {
  margin: 2rem auto;
  display: block;
}

/* Content Sections */
.content-section {
  max-width: 1000px;
  margin: 0 auto;
}

.content-wrapper {
  margin-top: 1.5rem;
}

.content-wrapper p {
  margin-bottom: 1.5rem;
}

/* Page Header */
.page-header {
  text-align: center;
  background-color: var(--surface);
  padding: 3rem 1.5rem 2rem;
}

.page-header p {
  font-size: 1.1rem;
  color: var(--primary);
  margin-top: 0.5rem;
}

/* K18: Elevated Shadow Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature-card {
  background-color: var(--surface);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

/* B18: Shadow Lift Buttons */
.btn {
  display: inline-block;
  padding: 0.9rem 2rem;
  background-color: var(--primary);
  color: var(--surface);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* L29: Asymmetric Grid Layout */
.intro-section,
.features-section,
.additional-section {
  max-width: 1200px;
  margin: 0 auto;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
  color: var(--surface);
  text-align: center;
  padding: 4rem 1.5rem;
}

.cta-content h2 {
  color: var(--surface);
}

.cta-content p {
  margin: 1.5rem auto;
  max-width: 700px;
  font-size: 1.05rem;
}

.cta-content svg {
  margin: 2rem auto;
  display: block;
}

/* FAQ Styles */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--surface);
  padding: 2rem;
  margin-bottom: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.faq-item h2 {
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.faq-item p {
  color: var(--text);
  line-height: 1.7;
}

/* Contact Styles */
.contact-container {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info h2,
.contact-message h2 {
  margin-bottom: 1.5rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-icon {
  font-size: 2rem;
  color: var(--primary);
}

.contact-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.contact-item p {
  margin-bottom: 0.5rem;
  color: var(--text);
}

.contact-message p {
  margin-bottom: 1.5rem;
}

.contact-message svg {
  margin: 2rem auto;
  display: block;
}

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

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

.doc-container h1 {
  margin-bottom: 1.5rem;
}

.doc-container p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

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

/* Footer */
footer {
  background-color: var(--text);
  color: var(--surface);
  padding: 2rem 1.5rem;
  text-align: center;
}

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

.footer-links {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.footer-links a {
  color: var(--surface);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Responsive Adjustments */
@media (max-width: 768px) {
  section {
    padding: 3rem 1rem;
  }

  .hero-section {
    padding: 3rem 1rem;
  }

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