:root {
  --color-bg: #FAF8F5;
  --color-text: #3E2723;
  --color-text-light: #5D4037;
  --color-primary: #5D4037;
  --color-primary-hover: #3E2723;
  --color-accent: #E1C6C1;
  --color-border: #D7CCC8;
  --color-bg-alt: #F3EBE6;
  --color-error: #D32F2F;
  --font-body: 'Noto Sans KR', system-ui, -apple-system, sans-serif;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --content-width: 880px;
  --article-width: 780px;
  --shadow-sm: 0 2px 8px rgba(93, 64, 55, 0.05);
  --shadow-md: 0 4px 16px rgba(93, 64, 55, 0.08);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

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

h1, h2, h3, h4 {
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

p { margin-bottom: var(--spacing-sm); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.content-container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.article-container {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Header */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.site-logo {
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo img {
  height: 40px;
  width: auto;
}

.main-nav {
  display: flex;
  gap: var(--spacing-md);
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
}

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

/* Button */
.btn {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

/* Asymmetric Sections */
.section {
  padding: var(--spacing-xl) 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.hero-section {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 880px;
}

.hero-content {
  max-width: 680px;
}

.split-section {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.split-content {
  flex: 1;
}

.split-image {
  flex: 1;
}

.split-image img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.split-reverse {
  flex-direction: row-reverse;
}

/* Cards */
.card-grid {
  display: grid;
  gap: var(--spacing-md);
}

.card-grid-asym {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-md);
}

.card {
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-sm);
}

/* Lists and Forms */
.feature-list {
  list-style: none;
}

.feature-list li {
  margin-bottom: var(--spacing-sm);
  padding-left: 1.5rem;
  position: relative;
}

.feature-list li::before {
  content: "•";
  color: var(--color-primary);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  background-color: #fff;
}

.form-control:focus {
  outline: 2px solid var(--color-primary);
  border-color: transparent;
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-col h3 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

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

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

.footer-col a {
  text-decoration: none;
  color: var(--color-text-light);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.warning-banner {
  background-color: var(--color-error);
  color: #fff;
  text-align: center;
  padding: 0.5rem;
  font-size: 0.85rem;
  font-weight: bold;
}

/* Utilities */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.quote-block {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-md);
  border-left: 4px solid var(--color-primary);
  font-style: italic;
  margin: var(--spacing-md) 0;
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
  }
  
  .main-nav.active {
    display: flex;
  }
  
  .split-section, .split-reverse {
    flex-direction: column;
  }
  
  .card-grid-asym {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
}