:root{--build-id:"96283709-a49c-43a1-9c55-90274203dd4e";}
/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #334155;
  --bg: #f8fafc;
  --text: #0f172a;
  --accent: #94a3b8;
  --heading: var(--text);
  --link: var(--text);
}

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

/* 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 & Navigation */
header {
  background: rgba(248, 250, 252, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(51, 65, 85, 0.1);
}

nav {
  max-width: 1450px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.search-box {
  flex: 1;
  max-width: 400px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.625rem 1rem;
  border: 2px solid var(--accent);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  background: white;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-menu a {
  color: var(--link);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  transition: 0.3s;
}

/* Hero Section */
.hero {
  padding: 6.5rem 2rem;
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(148, 163, 184, 0.1) 100%);
}

.hero-content {
  max-width: 1450px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.375rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
  color: var(--heading);
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.125rem;
  color: var(--text);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Stats Section */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 4.5rem;
  max-width: 1450px;
  margin: 0 auto;
  padding: 6.5rem 2rem;
}

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

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--text);
}

/* Section */
section {
  padding: 6.5rem 2rem;
}

.container {
  max-width: 1450px;
  margin: 0 auto;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 3rem;
  text-align: center;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 1rem;
}

/* Card Styles (K17) */
.card {
  border-bottom: 2px solid #e5e7eb;
  padding: 2rem 0;
}

.card:last-child {
  border-bottom: none;
}

.card h3 {
  margin-bottom: 1rem;
}

.card p {
  color: var(--text);
  line-height: 1.65;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 4.5rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Button Styles (B17) */
.btn {
  border: 2px solid var(--primary);
  background: transparent;
  padding: 0.875rem 2rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s;
  cursor: pointer;
  font-size: 1rem;
}

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

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

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

/* CTA Section */
.cta {
  background: var(--primary);
  color: white;
  text-align: center;
  padding: 6.5rem 2rem;
}

.cta h2 {
  color: white;
  margin-bottom: 1.5rem;
}

.cta p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta .btn {
  border-color: white;
  color: white;
}

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

/* Footer */
footer {
  background: var(--primary);
  color: white;
  padding: 4rem 2rem 2rem;
}

.footer-content {
  max-width: 1450px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h3 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.75rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-section a:hover,
.footer-section a:focus {
  color: white;
  outline: 2px solid white;
  outline-offset: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
}

/* Contact Info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.contact-icon {
  font-size: 1.5rem;
}

/* List Styles */
ul.feature-list {
  list-style: none;
  padding: 0;
}

ul.feature-list li {
  padding: 1rem 0;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

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

ul.feature-list li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* FAQ Styles */
.faq-item {
  border-bottom: 2px solid #e5e7eb;
  padding: 2rem 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1rem;
  font-size: 1.125rem;
}

.faq-answer {
  color: var(--text);
  line-height: 1.65;
}

/* Review Card */
.review-card {
  border-bottom: 2px solid #e5e7eb;
  padding: 2rem 0;
}

.review-card:last-child {
  border-bottom: none;
}

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.reviewer-name {
  font-weight: 700;
  color: var(--primary);
}

.review-rating {
  color: #f59e0b;
  font-size: 1.25rem;
}

.review-text {
  color: var(--text);
  line-height: 1.65;
}

/* Method Steps */
.method-step {
  border-bottom: 2px solid #e5e7eb;
  padding: 2rem 0;
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.method-step:last-child {
  border-bottom: none;
}

.step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
  width: 60px;
  text-align: center;
}

.step-content h3 {
  margin-bottom: 0.75rem;
}

/* SVG Icons */
.icon-svg {
  width: 48px;
  height: 48px;
  fill: var(--primary);
  margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .search-box {
    max-width: 200px;
  }

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

  .method-step {
    flex-direction: column;
    gap: 1rem;
  }

  .step-number {
    width: auto;
    text-align: left;
  }

  section {
    padding: 4rem 1.5rem;
  }

  .hero {
    padding: 4rem 1.5rem;
  }

  .cta {
    padding: 4rem 1.5rem;
  }
}

@media (max-width: 480px) {
  nav {
    padding: 1rem 1.5rem;
  }

  .logo {
    font-size: 1.25rem;
  }

  .search-box {
    display: none;
  }

  .grid {
    gap: 2rem;
  }

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