/* leather-crack-restore (r13) — hue 175, light-gray, radius 0, double-line divider */
:root {
  --h: 175;
  --bg: hsl(var(--h) 20% 95%);
  --surface: hsl(var(--h) 25% 99%);
  --ink: hsl(var(--h) 30% 12%);
  --ink-soft: hsl(var(--h) 15% 32%);
  --accent: hsl(var(--h) 55% 32%);
  --accent-strong: hsl(var(--h) 60% 22%);
  --line: hsl(var(--h) 20% 70%);
  --radius: 0;
}

* { box-sizing: border-box; }
html, body { max-width: 100%; overflow-x: hidden; }
body.r13-body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans KR", -apple-system, "Malgun Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent-strong); }

.r13-header-inner,
.r13-hero-inner,
.r13-summary,
.r13-gallery,
.r13-body-section,
.r13-cards,
.r13-cta-inner,
.r13-faq {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
}

.r13-header {
  background: var(--surface);
  border-bottom: 3px double var(--line);
}
.r13-header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.r13-brand { font-weight: 700; margin: 0; }
.r13-nav { display: flex; flex-wrap: wrap; gap: 14px; }
.r13-nav a {
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-size: 0.95rem;
}

.r13-hero { padding: 44px 0 32px; }
.r13-h1 {
  font-size: clamp(2rem, 6vw, 3.1rem);
  line-height: 1.25;
  margin: 0;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.r13-underline {
  width: 96px;
  height: 8px;
  background: var(--accent);
  margin: 18px 0 22px;
}
.r13-lead { font-size: 1.05rem; color: var(--ink-soft); max-width: 68ch; }
.r13-hero-cta {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin-top: 10px;
  padding: 0 20px;
  background: var(--accent-strong);
  color: hsl(var(--h) 30% 98%);
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius);
}

.r13-summary { padding: 8px 20px 28px; }
.r13-summary-list { margin: 0; padding-left: 1.3em; }
.r13-summary-list li { margin-bottom: 8px; }

.r13-gallery { padding-bottom: 32px; }
.r13-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.r13-gallery-grid figure { margin: 0; }
.r13-gallery-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
}
@media (min-width: 720px) {
  .r13-gallery-grid { grid-template-columns: repeat(4, 1fr); }
}

.r13-body-section { padding-bottom: 40px; }
.r13-body-section h2 {
  font-size: clamp(1.25rem, 3.4vw, 1.6rem);
  border-bottom: 3px double var(--line);
  padding-bottom: 10px;
  margin-top: 44px;
}
.r13-body-section h3 { font-size: 1.05rem; margin-bottom: 6px; }
.r13-body-section p { margin: 0.9em 0; }

.r13-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 18px 0;
}
.r13-compare-col {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 18px;
}
@media (min-width: 640px) {
  .r13-compare { grid-template-columns: 1fr 1fr; }
}

.r13-table-wrap { overflow-x: auto; margin: 18px 0; }
.r13-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 480px;
  background: var(--surface);
}
.r13-table caption { text-align: left; font-weight: 600; margin-bottom: 8px; }
.r13-table th, .r13-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.r13-table th { background: hsl(var(--h) 30% 90%); }

.r13-dl { margin: 18px 0; }
.r13-dl dt { font-weight: 700; margin-top: 14px; }
.r13-dl dd { margin: 4px 0 0; color: var(--ink-soft); }

.r13-checklist { padding-left: 1.3em; }
.r13-checklist li { margin-bottom: 8px; }

.r13-cards { padding-bottom: 12px; }
.r13-cards-title { font-size: 1.3rem; border-bottom: 3px double var(--line); padding-bottom: 10px; }
.r13-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 20px;
}
.r13-card {
  display: block;
  background: var(--surface);
  border-top: 4px solid var(--accent);
  padding: 18px;
  text-decoration: none;
  color: var(--ink);
}
.r13-card h3 { margin: 0 0 8px; font-size: 1.05rem; color: var(--accent-strong); }
.r13-card p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
@media (min-width: 640px) {
  .r13-cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .r13-cards-grid { grid-template-columns: repeat(3, 1fr); }
}

.r13-cta { padding: 40px 0; }
.r13-cta-band {
  background: linear-gradient(115deg, var(--accent-strong) 0%, var(--accent-strong) 46%, hsl(var(--h) 45% 45%) 46%, hsl(var(--h) 45% 45%) 100%);
  color: hsl(var(--h) 30% 98%);
  padding: 36px 0;
}
.r13-cta-inner h2 { margin: 0 0 10px; font-size: clamp(1.3rem, 3.6vw, 1.7rem); }
.r13-cta-inner p { margin: 0 0 18px; }
.r13-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.r13-cta-btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0 20px;
  background: hsl(var(--h) 30% 98%);
  color: var(--accent-strong);
  text-decoration: none;
  font-weight: 700;
}
.r13-cta-btn-alt {
  background: transparent;
  color: hsl(var(--h) 30% 98%);
  border: 2px solid hsl(var(--h) 30% 98%);
}

.r13-faq { padding-bottom: 48px; }
.r13-faq h2 { font-size: 1.3rem; border-bottom: 3px double var(--line); padding-bottom: 10px; }
.r13-faq-item {
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}
.r13-faq-item summary {
  cursor: pointer;
  font-weight: 700;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.r13-faq-item p { color: var(--ink-soft); margin: 10px 0 4px; }

.r13-footer {
  background: hsl(var(--h) 25% 14%);
  color: hsl(var(--h) 15% 90%);
  margin-top: 20px;
}
.r13-footer-inner { max-width: 920px; margin: 0 auto; padding: 28px 20px; }
.r13-biz-title { font-weight: 700; margin: 0 0 10px; }
.r13-biz-list { list-style: none; margin: 0 0 14px; padding: 0; font-size: 0.9rem; line-height: 1.8; }
.r13-copy { margin: 0; font-size: 0.85rem; opacity: 0.85; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

@media (prefers-color-scheme: dark) {
  body.r13-body {
    --bg: hsl(var(--h) 20% 10%);
    --surface: hsl(var(--h) 18% 15%);
    --ink: hsl(var(--h) 15% 92%);
    --ink-soft: hsl(var(--h) 12% 75%);
    --line: hsl(var(--h) 15% 32%);
  }
  .r13-table th { background: hsl(var(--h) 20% 22%); }
}