:root{--build-id:"3102b11d-f64b-413c-a9e4-dc6b89495770";}
/* ============================================
   페수루로64 (pesu64.site) - Styles
   변수: L09, C34, T22, B18, N05, K18, S05, H18, F3, CS18
   ============================================ */

/* ========== 1. CSS 변수 정의 ========== */
:root {
  /* C34: 다크 중성 색상 */
  --primary: #1e293b;
  --bg: #f1f5f9;
  --text: #0f172a;
  --accent: #64748b;
  --heading: var(--text);
  --link: var(--text);

  /* S05: 여백 시스템 */
  --section-padding: 7rem 0;
  --container-width: 1500px;
  --gap: 5rem;

  /* 기타 */
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* ========== 2. 리셋 및 기본 설정 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* F3: Windows Core 폰트 스택 */
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);
}

/* ========== 3. 헤딩 스타일 ========== */
/* H18: clamp 반응형 헤딩 */
h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.005em;
  color: var(--heading);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.3rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.005em;
  color: var(--heading);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.9rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.005em;
  color: var(--heading);
  margin-bottom: 1rem;
}

/* ========== 4. 링크 스타일 ========== */
a {
  color: var(--link);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary);
}

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

/* ========== 5. 접근성 ========== */
.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;
}

/* ========== 6. 컨테이너 및 레이아웃 ========== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section-spacing {
  padding: var(--section-padding);
}

.content-block {
  margin-bottom: var(--gap);
}

.content-block p {
  margin-bottom: 1.25rem;
}

.section-intro {
  font-size: 1.125rem;
  color: var(--accent);
  margin-bottom: 3rem;
  max-width: 800px;
}

.bg-accent {
  background-color: #e2e8f0;
}

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

/* ========== 7. 헤더 및 네비게이션 (N05) ========== */
header {
  background: rgba(241, 245, 249, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.logo:hover {
  color: var(--accent);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

nav a {
  font-weight: 500;
  color: var(--text);
  position: relative;
}

nav a:hover {
  color: var(--primary);
}

nav a[aria-current="page"] {
  color: var(--primary);
  font-weight: 600;
}

/* 햄버거 메뉴 (모바일) */
.menu-checkbox {
  display: none;
}

.menu-toggle {
  display: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--primary);
  user-select: none;
}

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

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

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

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

  nav li {
    width: 100%;
  }

  nav a {
    display: block;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
  }
}

/* ========== 8. 버튼 스타일 (B18) ========== */
/* B18: 미니멀 언더라인 버튼 */
.btn-primary,
.btn-secondary {
  display: inline-block;
  border-bottom: 2px solid var(--primary);
  background: transparent;
  padding: 0.5rem 0;
  font-weight: 500;
  color: var(--primary);
  transition: var(--transition);
}

.btn-primary:hover,
.btn-secondary:hover {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

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

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

/* ========== 9. Hero Section (L09) ========== */
.hero-section {
  padding: 8rem 0 7rem;
  background: linear-gradient(135deg, var(--bg) 0%, #e2e8f0 100%);
}

.hero-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items: center;
}

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

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

.hero-cta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

/* ========== 10. 페이지 헤더 ========== */
.page-header {
  padding: 5rem 0 3rem;
  background: linear-gradient(135deg, var(--bg) 0%, #e2e8f0 100%);
  text-align: center;
}

.page-header h1 {
  margin-bottom: 1rem;
}

.page-header p {
  font-size: 1.125rem;
  color: var(--accent);
}

/* ========== 11. 카드 스타일 (K18) ========== */
/* K18: 미니멀 사이드 보더 */
.step-card,
.feature-item,
.testimonial-card,
.benefit-item,
.tip-card,
.contact-card {
  background: transparent;
  border-left: 3px solid var(--primary);
  padding: 1.5rem 0 1.5rem 1.5rem;
  margin-bottom: 2rem;
}

.step-card h3,
.feature-item h3,
.benefit-item h3,
.tip-card h2,
.contact-card h2 {
  margin-bottom: 0.75rem;
}

.step-card p,
.feature-item p,
.benefit-item p,
.tip-card p,
.contact-card p {
  line-height: 1.7;
}

/* ========== 12. 스텝 그리드 (L09) ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.75rem;
  opacity: 0.3;
}

/* ========== 13. Features Grid ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

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

/* ========== 14. Testimonial Section ========== */
.testimonial-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

blockquote.testimonial-card {
  font-style: italic;
  line-height: 1.75;
}

blockquote footer {
  margin-top: 1rem;
  font-style: normal;
  font-weight: 600;
  color: var(--primary);
}

/* ========== 15. CTA Section ========== */
.cta-section {
  padding: 6rem 0;
  background: var(--primary);
  color: #fff;
  text-align: center;
}

.cta-section h2 {
  color: #fff;
  margin-bottom: 1.5rem;
}

.cta-section p {
  font-size: 1.125rem;
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

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

.cta-section .btn-primary:hover,
.cta-section .btn-secondary:hover {
  opacity: 0.8;
}

/* ========== 16. Benefit List ========== */
.benefit-list {
  margin-top: 4rem;
}

.benefit-list h2 {
  margin-bottom: 2.5rem;
}

.benefit-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.75rem;
}

/* ========== 17. Tips Grid ========== */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

/* ========== 18. Contact Info ========== */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-bottom: 4rem;
}

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

.contact-desc {
  margin-top: 1rem;
  font-size: 0.9375rem;
  color: var(--accent);
  line-height: 1.6;
}

/* ========== 19. Visual Elements ========== */
.visual-element {
  margin: 4rem 0;
  text-align: center;
}

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

/* ========== 20. Footer ========== */
footer {
  background: var(--primary);
  color: #fff;
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand strong {
  display: block;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  opacity: 0.8;
  font-size: 0.9375rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #fff;
  opacity: 0.9;
  transition: var(--transition);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--accent);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  opacity: 0.8;
  font-size: 0.875rem;
}

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

.footer-legal a {
  color: #fff;
  opacity: 0.8;
  font-size: 0.875rem;
}

.footer-legal a:hover {
  opacity: 1;
}

/* ========== 21. Doc Container (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 {
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.doc-container a {
  display: inline-block;
  margin-top: 1.5rem;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 0.25rem;
}

/* ========== 22. 반응형 조정 ========== */
@media (max-width: 768px) {
  :root {
    --section-padding: 4rem 0;
    --gap: 3rem;
  }

  .container {
    padding: 0 1.5rem;
  }

  .hero-section {
    padding: 5rem 0 4rem;
  }

  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }

  .steps-grid,
  .features-grid,
  .testimonials-grid,
  .tips-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}