:root{--build-id:"507d4d27-838d-4fcb-9cfe-1f84753919ed";}
/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  font-weight: 300;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
}

/* F6 시스템 폰트 스택 */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

/* C14 색상 팔레트 */
:root {
  --primary: #16a34a;
  --bg: #dcfce7;
  --text: #166534;
  --accent: #22c55e;
  --heading: #166534;
  --link: #166534;
}

/* 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;
}

/* N11 네비게이션: 상단 스크롤 + 중앙 로고 + 좌우 메뉴 (대칭) */
header {
  background: rgba(220, 252, 231, 0.95);
  border-bottom: 2px solid var(--primary);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: background 0.3s;
}

nav {
  max-width: 1350px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-left {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-right {
  display: flex;
  gap: 2rem;
  align-items: center;
}

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

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

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--primary);
  transition: all 0.3s;
}

/* S11 섹션 여백 */
section {
  padding: 5.75rem 2rem;
}

.container {
  max-width: 1350px;
  margin: 0 auto;
}

/* H08 헤딩 스타일 */
h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--heading);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.375rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--heading);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--heading);
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
  font-size: 1rem;
  line-height: 1.7;
}

/* B08 버튼 스타일 */
.btn {
  display: inline-block;
  border-radius: 0;
  padding: 0.875rem 2rem;
  font-weight: 500;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.2);
  background: var(--primary);
  color: white;
  text-decoration: none;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn:hover,
.btn:focus {
  background: var(--accent);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.2);
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--primary);
  color: white;
}

/* K08 카드 스타일 */
.card {
  border: 2px dashed #9ca3af;
  border-radius: 0.75rem;
  padding: 1.75rem;
  background: white;
  transition: all 0.3s;
}

.card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(22, 101, 52, 0.1);
}

.card h3 {
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text);
  font-size: 0.95rem;
}

/* L24 레이아웃: 테크 히어로 */
.hero {
  background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
  text-align: center;
  padding: 6rem 2rem 5rem;
}

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

.hero p {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  color: var(--text);
}

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

/* 6열 로고/아이콘 그리드 */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 3.75rem;
  margin-top: 3rem;
}

.logo-item {
  text-align: center;
}

.logo-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
  display: block;
}

.logo-item p {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

/* 기능 상세 섹션 */
.features-detail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3.75rem;
}

/* 체크리스트 스타일 (CS08) */
.checklist {
  list-style: none;
}

.checklist li {
  padding: 0.75rem 0;
  padding-left: 2rem;
  position: relative;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.6;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.25rem;
}

/* 스티키 CTA */
.sticky-cta {
  position: sticky;
  bottom: 2rem;
  background: var(--primary);
  color: white;
  padding: 1.5rem 2rem;
  border-radius: 0.5rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  max-width: 1350px;
  margin: 0 auto;
}

.sticky-cta p {
  font-weight: 700;
  font-size: 1.125rem;
  margin: 0;
}

/* Footer */
footer {
  background: var(--primary);
  color: white;
  padding: 3rem 2rem 2rem;
  margin-top: 5rem;
}

.footer-content {
  max-width: 1350px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: white;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.footer-section a:hover,
.footer-section a:focus {
  color: white;
  text-decoration: underline;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 1.5rem;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.875rem;
  margin: 0;
}

/* 반응형 */
@media (max-width: 768px) {
  nav {
    flex-wrap: wrap;
  }

  .logo {
    position: relative;
    left: 0;
    transform: none;
    order: 1;
  }

  .nav-left,
  .nav-right {
    display: none;
    width: 100%;
    order: 3;
  }

  .nav-left.active,
  .nav-right.active {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    margin-top: 1rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 1rem;
  }

  .hamburger {
    display: flex;
    order: 2;
    margin-left: auto;
  }

  .hero {
    padding: 4rem 1.5rem 3rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }

  .logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .features-detail {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .sticky-cta {
    flex-direction: column;
    text-align: center;
    bottom: 1rem;
    margin: 0 1rem;
  }

  section {
    padding: 3rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .logo-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }
}

/* 인라인 SVG 스타일 */
.icon-svg {
  width: 100%;
  height: auto;
  max-width: 200px;
  margin: 0 auto;
  display: block;
}

/* 유틸리티 */
.text-center {
  text-align: center;
}

.mt-2 {
  margin-top: 2rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

/* 포커스 표시 */
*:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
}