:root {
  --color-bg: #f7f8fa;
  --color-surface: #ffffff;
  --color-text: #1a1c1e;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-accent: #ef4444;
  --radius: 12px;
  --max-width: 1080px;
  font-size: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Apple SD Gothic Neo",
    "Malgun Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo { font-size: 1.25rem; font-weight: 800; color: var(--color-primary); }
.alert-btn {
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
}
.alert-btn:hover { background: var(--color-primary-dark); }

.site-nav { display: flex; gap: 18px; }
.site-nav a { font-size: 0.875rem; color: var(--color-text-muted); }
.site-nav a:hover { color: var(--color-primary); }

/* Policy pages (about / privacy / contact) */
.policy-page { padding: 40px 20px 60px; max-width: 720px; }
.policy-page h1 { font-size: 1.75rem; margin-bottom: 8px; }
.policy-page h2 { font-size: 1.15rem; margin: 28px 0 8px; }
.policy-page .updated { color: var(--color-text-muted); font-size: 0.85rem; margin-bottom: 24px; }
.policy-page ul { padding-left: 20px; }
.policy-page li { margin-bottom: 6px; }
.policy-page a { color: var(--color-primary); text-decoration: underline; }
.contact-email { font-size: 1.1rem; font-weight: 700; margin-top: 16px; }

/* Hero */
.hero {
  padding: 48px 0 32px;
  text-align: center;
}
.hero h1 { font-size: 1.75rem; margin: 0 0 8px; }
.hero p { color: var(--color-text-muted); margin: 0; }

/* Filters */
.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 16px 0;
}
.filter-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
}
.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* Grid */
.item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  padding: 8px 0 48px;
}
.item-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.15s, transform 0.15s;
}
.item-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-2px); }
.item-card .thumb { aspect-ratio: 4 / 3; background: #f0f1f3; overflow: hidden; }
.item-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.item-card .body { padding: 14px; }
.item-card .tags { display: flex; gap: 6px; margin-bottom: 6px; }
.tag {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(239,68,68,0.1);
  padding: 2px 8px;
  border-radius: 999px;
}
.item-card h3 { font-size: 1rem; margin: 0 0 4px; }
.item-card .summary { font-size: 0.8rem; color: var(--color-text-muted); margin: 0 0 10px; }
.price-row { display: flex; align-items: baseline; gap: 8px; }
.price-now { font-size: 1.125rem; font-weight: 800; }
.price-original { font-size: 0.8rem; color: var(--color-text-muted); text-decoration: line-through; }
.discount { font-size: 0.8rem; font-weight: 700; color: var(--color-accent); }

.empty-state {
  text-align: center;
  padding: 48px 0;
  color: var(--color-text-muted);
}

/* FAQ */
.faq { padding: 24px 0 48px; border-top: 1px solid var(--color-border); }
.faq h2 { font-size: 1.25rem; margin-bottom: 16px; }
.faq-item { border-bottom: 1px solid var(--color-border); padding: 14px 0; }
.faq-item .q { font-weight: 700; margin-bottom: 6px; }
.faq-item .a { color: var(--color-text-muted); font-size: 0.9rem; margin: 0; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

/* Detail page */
.detail {
  padding: 32px 0 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.detail .thumb {
  border-radius: var(--radius);
  overflow: hidden;
  background: #f0f1f3;
  aspect-ratio: 4 / 3;
}
.detail .thumb img { width: 100%; height: 100%; object-fit: cover; }
.detail h1 { font-size: 1.5rem; margin: 0 0 12px; }
.detail .price-row { margin: 16px 0; }
.detail .price-now { font-size: 1.75rem; }
.cta-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--color-primary);
  color: #fff;
  padding: 16px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1rem;
  margin: 16px 0;
}
.cta-btn:hover { background: var(--color-primary-dark); }
.description { color: var(--color-text-muted); white-space: pre-line; }
.disclosure-box {
  background: #f0f1f3;
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 16px;
}
.back-link { display: inline-block; margin: 20px 0 0; color: var(--color-primary); font-weight: 600; }

@media (max-width: 720px) {
  .detail { grid-template-columns: 1fr; }
}