:root{--build-id:"322844a1-198b-4af2-8050-ec228e7f0258";}
/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, "Noto Sans KR", "Malgun Gothic", -apple-system, "Segoe UI", Arial, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: #134e4a;
  background-color: #f0fdfa;
}

/* Color Variables (C11) */
:root {
  --primary: #0f766e;
  --bg: #f0fdfa;
  --text: #134e4a;
  --accent: #115e59;
  --border: #99f6e4;
  --card-bg: #ffffff;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* Header (N13: 상단 투명 + 좌측 메뉴 + 중앙 로고 + 우측 CTA + 햄버거) */
header {
  position: sticky;
  top: 0;
  background: rgba(240, 253, 250, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
  padding: 1rem 0;
}

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

.nav-left {
  flex: 1;
}

.nav-left ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--primary);
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
}

.logo svg {
  color: var(--primary);
}

.nav-right {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.nav-right ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}

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

header a:hover,
header a:focus {
  color: var(--primary);
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}

header a[aria-current="page"] {
  color: var(--primary);
  font-weight: 700;
}

.cta-link {
  background: var(--primary);
  color: white !important;
  padding: 0.5rem 1.5rem;
  border-radius: 0.25rem;
  font-weight: 700;
}

.cta-link:hover,
.cta-link:focus {
  background: var(--accent);
  color: white !important;
}

/* Hamburger Menu */
.menu-checkbox {
  display: none;
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary);
  background: none;
  border: none;
  padding: 0.5rem;
}

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

  .nav-left,
  .nav-right {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
  }

  .menu-checkbox:checked ~ .nav-left,
  .menu-checkbox:checked ~ .nav-right {
    display: block;
  }

  .nav-left ul,
  .nav-right ul {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-right {
    top: calc(100% + 120px);
  }
}

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

section {
  padding: 7rem 0;
}

/* Typography (T25: Inter + Lora) */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Lora", Georgia, serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

/* Heading (H05) */
h1 {
  font-size: clamp(2.5rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

h2 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
}

p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* Button (B05: 사각형 버튼) */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 1.25rem 3rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
  border-radius: 0;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--primary);
  color: white;
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 8rem 0 6rem;
  background: linear-gradient(135deg, #f0fdfa 0%, #ccfbf1 100%);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text);
  max-width: 700px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2.5rem;
}

/* Card (K05) */
.card {
  border: 2px solid #e5e7eb;
  border-radius: 0.5rem;
  padding: 2rem;
  background: var(--card-bg);
  transition: all 0.3s;
}

.card:hover,
.card:focus-within {
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.15);
  transform: translateY(-4px);
}

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

.card p {
  color: var(--text);
  line-height: 1.6;
}

/* Grid Layouts */
.features-grid,
.benefits-grid,
.methods-grid,
.tips-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-item,
.benefit-item,
.method-item,
.tip-item,
.faq-item {
  border: 2px solid #e5e7eb;
  border-radius: 0.5rem;
  padding: 2rem;
  background: var(--card-bg);
  transition: all 0.3s;
}

.feature-item:hover,
.benefit-item:hover,
.method-item:hover,
.tip-item:hover,
.faq-item:hover {
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.15);
  transform: translateY(-4px);
}

.feature-icon,
.benefit-icon,
.method-icon,
.tip-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

/* Comparison Table (CS05: 비교형) */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 3rem 0;
  background: var(--card-bg);
  border: 2px solid #e5e7eb;
  border-radius: 0.5rem;
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: 1.5rem;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
}

.comparison-table th {
  background: var(--primary);
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover {
  background: #f0fdfa;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 3rem;
  margin: 3rem 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 2rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -3.5rem;
  top: 0.5rem;
  width: 1rem;
  height: 1rem;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid var(--bg);
}

.timeline-item h3 {
  margin-bottom: 0.5rem;
}

/* List Styles */
.content-list {
  list-style: none;
  margin: 2rem 0;
}

.content-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.content-list li::before {
  content: "▸";
  color: var(--primary);
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
}

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

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 4rem;
  align-items: start;
  margin: 3rem 0;
}

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

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
  text-align: center;
  padding: 6rem 0;
}

.cta-section h2 {
  color: white;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.cta-section .btn-primary {
  background: white;
  color: var(--primary);
}

.cta-section .btn-primary:hover,
.cta-section .btn-primary:focus {
  background: var(--bg);
  transform: translateY(-2px);
}

/* Contact Section */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.contact-card {
  border: 2px solid #e5e7eb;
  border-radius: 0.5rem;
  padding: 2rem;
  background: var(--card-bg);
  text-align: center;
}

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

.contact-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.contact-card p {
  color: var(--text);
  margin: 0;
}

/* Policy Content */
.policy-content {
  max-width: 900px;
  margin: 0 auto;
}

.policy-content article {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.policy-content article:last-child {
  border-bottom: none;
}

.policy-content h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.policy-content ul {
  margin: 1rem 0 1rem 2rem;
  line-height: 1.8;
}

.policy-content li {
  margin-bottom: 0.5rem;
}

/* Footer */
footer {
  background: var(--primary);
  color: white;
  padding: 3rem 0 1.5rem;
  margin-top: 5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-brand svg {
  color: white;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

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

.footer-links a:hover,
.footer-links a:focus {
  opacity: 0.8;
  outline: 2px solid white;
  outline-offset: 4px;
}

.footer-contact p {
  margin: 0.5rem 0;
  opacity: 0.9;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
  section {
    padding: 4rem 0;
  }

  .container {
    padding: 0 1.5rem;
  }

  .hero-section {
    padding: 5rem 0 3rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .features-grid,
  .benefits-grid,
  .methods-grid,
  .tips-grid,
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .comparison-table {
    font-size: 0.9rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 1rem;
  }

  .timeline {
    padding-left: 2rem;
  }

  .timeline-item {
    padding-left: 1.5rem;
  }
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}