/* =========================================================
   BREADCRUMB (shared with equipment.css if present)
   ========================================================= */
.breadcrumb-bar {
  padding: 14px 0;
  font-size: var(--fs-xs);
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--line-hair);
}
.breadcrumb-bar a { transition: color .2s var(--ease-out); }
.breadcrumb-bar a:hover { color: var(--accent); }
.breadcrumb-bar b { color: var(--ink); font-weight: 400; }
.breadcrumb-bar .sep { color: var(--ink-trace); margin: 0 8px; }

/* =========================================================
   PRODUCT MAIN
   ========================================================= */
.product-main {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  padding: 48px 0 40px;
}

.gallery-main {
  aspect-ratio: 3 / 2;
  background: var(--fill-light);
  background-image: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(0,0,0,0.04) 10px, rgba(0,0,0,0.04) 11px);
  position: relative;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-faint); font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  border: 1px solid var(--line-soft);
  margin-bottom: 10px;
}
.gallery-main::after { content: ""; position: absolute; inset: 14px; border: 1px dashed rgba(0,0,0,0.12); pointer-events: none; }
.gallery-main .label { position: relative; z-index: 1; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.thumb {
  aspect-ratio: 1;
  background: var(--fill-light);
  background-image: repeating-linear-gradient(45deg, transparent, transparent 6px, rgba(0,0,0,0.04) 6px, rgba(0,0,0,0.04) 7px);
  border: 1px solid var(--line-soft);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 8px; color: var(--ink-faint);
}
.thumb.active { border: 2px solid var(--ink); }

.hint-box {
  margin-top: 20px;
  padding: 14px 16px;
  background: #fbfbf9;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--accent);
  font-size: var(--fs-xs);
  color: var(--ink-mid);
  line-height: 1.8;
}
.hint-box b { color: var(--ink); font-weight: 400; }

/* Right info */
.product-info .tags { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.tag {
  display: inline-block; padding: 2px 8px;
  font-size: 9px; font-weight: 400;
  letter-spacing: 0.1em; color: #fff; background: var(--ink);
}
.tag--ok,
.tag--warn,
.tag--out,
.tag--accent { background: var(--ink); }

.product-id-line { font-size: var(--fs-2xs); color: var(--ink-faint); letter-spacing: 0.15em; margin-bottom: 6px; font-variant-numeric: tabular-nums; }
.product-title { font-size: var(--fs-3xl); font-weight: 400; letter-spacing: 0.02em; line-height: 1.2; margin-bottom: 14px; }
.product-lead { font-size: var(--fs-md); color: var(--ink-mid); line-height: 1.85; margin-bottom: 24px; }

/* Spec table */
.spec-table { border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); margin-bottom: 24px; }
.spec-table table { width: 100%; border-collapse: collapse; }
.spec-table tr:not(:last-child) { border-bottom: 1px solid var(--line-hair); }
.spec-table th {
  text-align: left;
  padding: 10px 14px 10px 0;
  font-weight: 400;
  font-size: var(--fs-sm);
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  width: 34%;
  vertical-align: top;
}
.spec-table td { padding: 10px 0; font-size: var(--fs-sm); }
.spec-table tr.highlight th,
.spec-table tr.highlight td { vertical-align: middle; font-size: var(--fs-sm); }
.spec-table tr.highlight th { color: var(--ink-faint); font-weight: 400; letter-spacing: 0.04em; }
.spec-table tr.highlight td { font-weight: 400; color: var(--ink); font-variant-numeric: tabular-nums; }
.spec-table tr.highlight .stock-value--warn,
.spec-table tr.highlight .stock-value--out { color: #c63c2c; font-weight: 400; }

/* Date + qty */
.date-picker { margin-bottom: 20px; }
.date-picker label,
.qty-cta label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.qty-cta .qty-warn {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 6px;
  font-size: 10px;
  letter-spacing: 0.04em;
  color: #fff;
  background: #c63c2c;
  vertical-align: middle;
}
.date-picker .inputs { display: grid; grid-template-columns: 1fr 16px 1fr; gap: 8px; align-items: center; }
.date-picker input {
  border: 1.5px solid var(--line-soft);
  padding: 10px 12px;
  font-size: var(--fs-sm);
  background: #fff; color: var(--ink); outline: none;
  width: 100%;
}
.date-picker input:focus { border-color: var(--ink); }
.date-picker .to { text-align: center; color: var(--ink-faint); }
.date-picker .hint { font-size: 10px; color: var(--ink-faint); margin-top: 6px; }

.qty-cta { display: grid; grid-template-columns: 140px 1fr; gap: 10px; margin-bottom: 12px; align-items: end; }
.qty-cta .btn { height: 40px; box-sizing: border-box; }
.qty-control { display: flex; border: 1.5px solid var(--line-soft); height: 40px; box-sizing: border-box; }
.qty-control button { flex: 1; font-size: var(--fs-md); font-weight: 400; cursor: pointer; }
.qty-control button:hover { background: var(--fill-light); }
.qty-control .num {
  flex: 1.2;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--fs-lg); font-weight: 400;
  border-left: 1px solid var(--line-soft); border-right: 1px solid var(--line-soft);
  font-variant-numeric: tabular-nums;
}

.secondary-actions {
  display: flex; align-items: center; gap: 14px;
  padding-top: 14px;
  border-top: 1px dotted var(--line-soft);
  font-size: var(--fs-xs);
  color: var(--ink-faint);
}
.secondary-actions .share-btn {
  cursor: pointer;
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 4px 0;
  letter-spacing: 0.04em;
  transition: color .2s var(--ease-out);
}
.secondary-actions .share-btn:hover { color: var(--ink); }
.share-feedback {
  display: inline-block;
  padding: 4px 10px;
  font-size: 10px;
  letter-spacing: 0.06em;
  background: var(--ink);
  color: #fff;
  opacity: 0;
  transform: translateY(-2px);
  pointer-events: none;
  transition: opacity .2s var(--ease-out), transform .2s var(--ease-out);
}
.share-feedback.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   RELATED SECTIONS
   ========================================================= */
.sec { padding: 64px 0; border-top: 1px solid var(--line-hair); }
.sec--tint { background: #fbfbf9; }
.sec-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 28px;
  gap: 20px; flex-wrap: wrap;
}
.sec-head h2 { font-size: var(--fs-2xl); font-weight: 400; letter-spacing: 0.02em; line-height: 1.3; text-align: left; }
.sec-head h2 .desc { display: block; font-size: var(--fs-sm); font-weight: 400; color: var(--ink-faint); margin-top: 6px; }
.sec-head--center {
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  text-align: left;
}
.sec-link { font-size: var(--fs-sm); font-weight: 400; letter-spacing: 0.04em; padding-bottom: 2px; border-bottom: 1px solid var(--ink); white-space: nowrap; transition: all .3s var(--ease-out); }
.sec-link:hover { color: var(--accent); border-color: var(--accent); }

/* Companion */
.companion-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.companion-card {
  background: #fff; border: 1px solid var(--line-soft); padding: 14px;
  display: flex; gap: 12px; align-items: center;
  transition: all .3s var(--ease-out);
}
.companion-card:hover { border-color: var(--ink); }
.companion-card .thumb { width: 56px; height: 56px; flex-shrink: 0; aspect-ratio: 1; border: 1px solid var(--line-soft); }
.companion-card .info { flex: 1; min-width: 0; }
.companion-card .nm { font-size: var(--fs-xs); font-weight: 400; margin-bottom: 2px; line-height: 1.3; }
.companion-card .sp { font-size: 10px; color: var(--ink-faint); margin-bottom: 4px; line-height: 1.4; }
.companion-card .st { font-size: 10px; font-weight: 400; font-variant-numeric: tabular-nums; }
.companion-card .st--ok { color: var(--ok); }
.companion-card .st--warn { color: var(--warn); }

/* Cases */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { background: #fff; border: 1px solid var(--line-soft); transition: all .3s var(--ease-out); }
.case-card:hover { box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1); }
.case-visual {
  aspect-ratio: 3 / 2;
  background: var(--fill-light);
  background-image: repeating-linear-gradient(60deg, transparent, transparent 8px, rgba(0,0,0,0.04) 8px, rgba(0,0,0,0.04) 9px);
  position: relative;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-faint); font-size: var(--fs-xs);
  letter-spacing: 0.1em;
}
.case-tag { position: absolute; top: 12px; left: 12px; background: var(--ink); color: #fff; padding: 4px 10px; font-size: var(--fs-2xs); letter-spacing: 0.2em; font-weight: 400; }
.case-body { padding: 14px 18px 18px; }
.case-client { font-size: var(--fs-2xs); letter-spacing: 0.15em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 6px; }
.case-title { font-size: var(--fs-md); font-weight: 400; letter-spacing: 0.02em; line-height: 1.35; margin-bottom: 12px; }
.case-meta {
  display: flex; gap: 14px;
  padding-top: 10px; border-top: 1px dotted var(--line-soft);
  font-size: var(--fs-2xs);
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}
.case-meta span { display: inline-flex; align-items: center; gap: 6px; }
.case-meta span::before { content: ""; width: 3px; height: 3px; background: var(--ink); display: inline-block; }

/* FAQ */
.faq-list { border: 1px solid var(--line-soft); background: #fff; }
.faq-item { border-bottom: 1px solid var(--line-soft); }
.faq-item:last-child { border-bottom: none; }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  transition: background .2s var(--ease-out);
}
.faq-q:hover { background: #fbfbf9; }
.faq-q b { color: var(--accent); margin-right: 12px; font-size: var(--fs-md); font-weight: 400; }
.faq-q .q-text { flex: 1; font-size: var(--fs-sm); font-weight: 400; letter-spacing: 0.02em; }
.faq-q .plus { color: var(--ink-faint); font-size: var(--fs-lg); transition: transform .2s var(--ease-out); }
.faq-item.open .faq-q .plus { transform: rotate(45deg); color: var(--accent); }
.faq-a {
  padding: 0 20px 18px 50px;
  font-size: var(--fs-sm);
  color: var(--ink-mid);
  line-height: 1.9;
  display: none;
}
.faq-item.open .faq-a { display: block; }

/* Sticky CTA */
.sticky-cta { background: var(--ink); color: #fff; padding: 28px 0; }
.sticky-cta .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.sticky-cta .left h3 { font-size: var(--fs-lg); font-weight: 400; margin-bottom: 4px; letter-spacing: 0.02em; }
.sticky-cta .left p { font-size: var(--fs-xs); color: rgba(255,255,255,0.6); }
.sticky-cta .right { display: flex; gap: 10px; flex-wrap: wrap; }

@media (max-width: 1024px) {
  .product-main { grid-template-columns: 1fr; gap: 28px; }
  .companion-grid { grid-template-columns: 1fr 1fr; }
  .case-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .product-title { font-size: 28px; }
  .companion-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .qty-cta { grid-template-columns: 1fr; }
}