body { font-family: Arial, sans-serif; background:#f7f7f7; color:#111; }
main { max-width: 980px; margin: auto; background:#fff; padding:20px; }
section { margin-bottom: 40px; }
h1, h2 { border-bottom: 2px solid #ddd; padding-bottom: 5px; }

header{max-width:980px;margin:24px auto 0 auto;background:#fff;padding:18px 20px;border-radius:12px;border:1px solid #e6e6e6;}
header h1{margin:0 0 6px 0;}
.subtitle{margin:0 0 10px 0;color:#333;}
nav.lang a{margin-right:10px;text-decoration:none;color:#0b57d0;}
nav.lang{margin-top:8px}
.toc{max-width:980px;margin:14px auto;background:#fff;padding:18px 20px;border-radius:12px;border:1px solid #e6e6e6;}
.specbox{border:1px solid #e6e6e6;border-radius:12px;padding:12px 14px;background:#fafafa;margin:10px 0 12px 0;}
.keyline{padding:10px 12px;border-left:4px solid #d93025;background:#fff4f4;border-radius:8px;}
.placeholders{border:1px dashed #bbb;border-radius:10px;padding:10px 12px;background:#fcfcfc;margin:10px 0}
table.ovd{width:100%;border-collapse:separate;border-spacing:0;border:1px solid #e6e6e6;border-radius:12px;overflow:hidden;margin-top:10px}
table.ovd th, table.ovd td{padding:10px 10px;border-bottom:1px solid #eee;border-right:1px solid #eee;vertical-align:top}
table.ovd th{background:#fafafa;font-weight:700;text-align:left}
table.ovd tr:last-child td{border-bottom:none}
table.ovd th:last-child, table.ovd td:last-child{border-right:none}
.ok{color:#1e8e3e;font-weight:700}
.bad{color:#d93025;font-weight:700}
.warn{color:#b06000;font-weight:700}
.note{color:#333}
.quote{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;}

/* Document thumbnails (spec + invoice) */
.specbox { margin-top: 12px; }
.specbox .docrow { display: flex; gap: 18px; flex-wrap: wrap; align-items: flex-start; }
.specbox .docitem { flex: 1 1 320px; min-width: 260px; }
img.docthumb { width: 100%; max-width: 360px; height: auto; display: block; border-radius: 10px; border: 1px solid #d9d9d9; box-shadow: 0 1px 8px rgba(0,0,0,.06); }

.docnote { font-size: .92rem; color: #555; margin-top: 6px; }

/* ---------------- Lightbox (assets/lightbox.js) ---------------- */
.lb-backdrop{
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.86);
  z-index: 9999;
  padding: 20px;
}

.lb-inner{
  max-width: min(1200px, 96vw);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lb-img{
  width: 100%;
  height: auto;
  max-height: 86vh;
  object-fit: contain;
  border-radius: 12px;
  background: rgba(0,0,0,.35);
  box-shadow: 0 20px 60px rgba(0,0,0,.45);
}

.lb-caption{
  color: #fff;
  font-size: 14px;
  line-height: 1.35;
  opacity: .9;
  padding: 0 4px;
}

.lb-close{
  position: fixed;
  top: 14px;
  right: 14px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(0,0,0,.35);
  color: #fff;
  font-size: 22px;
  cursor: pointer;
}

.lb-close:hover{ background: rgba(0,0,0,.55); }

/* ---------------- Lightbox (assets/lightbox.js) ---------------- */
.lb-backdrop{
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.86);
  z-index: 9999;
  padding: 20px;
}
.lb-inner{
  max-width: min(1200px, 96vw);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lb-img{
  max-width: min(1200px, 96vw);
  max-height: 86vh;
  width: auto;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 14px 50px rgba(0,0,0,.45);
  background: #111;
}
.lb-caption{color: rgba(255,255,255,.9);font-size: 14px;line-height: 1.35;}
.lb-close{
  position: fixed;
  top: 14px;
  right: 14px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.22);
  background: rgba(0,0,0,.38);
  color: #fff;
  font-size: 26px;
  cursor: pointer;
}
.lb-close:hover{background: rgba(0,0,0,.55);}

@media (max-width: 520px){
  .lb-img{max-height: 80vh;border-radius: 12px;}
}

/* Thumbnail galleries (click to open in lightbox) */
.thumb-grid{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:flex-start;
}
.thumb{
  display:block;
  width:220px;
  max-width:44vw;
  text-decoration:none;
  color:inherit;
}
@media (max-width: 520px){
  .thumb{ width:160px; max-width:46vw; }
}
.thumb img{
  width:100%;
  height:auto;
  display:block;
  border-radius:12px;
  border:1px solid rgba(0,0,0,.12);
  box-shadow:0 6px 18px rgba(0,0,0,.08);
}
.cap{
  margin-top:6px;
  font-size:12px;
  line-height:1.25;
  opacity:.85;
}