*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#fafafa;color:#222;line-height:1.5}
header{background:#1a1a2e;color:#fff;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}
header h1{margin:0;font-size:1.3rem}
header nav a{color:#fff;margin-left:1rem;text-decoration:none;font-size:.9rem}
header nav a:hover{text-decoration:underline}
main{max-width:1400px;margin:0 auto;padding:1.5rem}
h2{margin-top:2rem}
.filters{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.5rem;background:#fff;padding:1rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.filters label{display:flex;flex-direction:column;font-size:.85rem;color:#555}
.filters select,.filters input{padding:.4rem;margin-top:.2rem;border:1px solid #ccc;border-radius:4px;font-size:.95rem}
.matrix{display:grid;grid-template-columns:140px repeat(5,1fr);gap:4px;margin-bottom:2rem}
.matrix .cell{background:#fff;padding:.75rem;border-radius:6px;min-height:90px;font-size:.85rem;border:1px solid #eee}
.matrix .head{background:#1a1a2e;color:#fff;font-weight:600;text-align:center;display:flex;align-items:center;justify-content:center}
.matrix .rowhead{background:#16213e;color:#fff;font-weight:600;display:flex;align-items:center;justify-content:center;text-align:center}
.matrix .cell a{display:block;color:#0f3460;text-decoration:none;padding:2px 0;border-bottom:1px solid #f0f0f0;font-size:.8rem}
.matrix .cell a:hover{color:#e94560}
.matrix .count{color:#999;font-size:.75rem;margin-bottom:.3rem}
.piece-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}
.piece-card{background:#fff;padding:1rem;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,.05);text-decoration:none;color:inherit;display:block}
.piece-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.1)}
.piece-card h3{margin:0 0 .3rem;font-size:1.05rem;color:#1a1a2e}
.piece-card .meta{font-size:.8rem;color:#666}
.badge{display:inline-block;background:#0f3460;color:#fff;padding:2px 8px;border-radius:10px;font-size:.7rem;margin-right:4px}
.badge.diff{background:#e94560}
.viewer{background:#fff;border-radius:8px;padding:1rem;margin-top:1rem;min-height:400px}
.viewer-controls{display:flex;gap:.5rem;margin-bottom:1rem;flex-wrap:wrap}
.viewer-controls button{padding:.5rem 1rem;background:#0f3460;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:.9rem}
.viewer-controls button:hover{background:#1a1a2e}
.viewer-controls button.active{background:#e94560}
#osmd-container{min-height:400px;overflow:auto}
.fullscreen{position:fixed;inset:0;background:#fff;z-index:1000;padding:1rem;overflow:auto}
.fullscreen #osmd-container{height:calc(100vh - 80px)}
footer{text-align:center;padding:2rem 1rem;color:#888;font-size:.85rem}
footer a{color:#0f3460;margin:0 .5rem}
@media (max-width:768px){
  .matrix{grid-template-columns:80px repeat(5,1fr);font-size:.75rem}
  .matrix .cell{min-height:60px;padding:.4rem}
  .matrix .cell a{font-size:.7rem}
}