.preview-overlay{position:fixed;inset:0;background:rgba(16,31,43,.60);display:flex;align-items:center;justify-content:center;padding:24px;z-index:9999}
.preview-overlay.hidden{display:none}
.preview-window{width:min(1180px,96vw);height:min(820px,92vh);background:#fff;border-radius:12px;box-shadow:0 22px 70px rgba(0,0,0,.30);display:flex;flex-direction:column;overflow:hidden}
.preview-head{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);background:#f7f9fa}
.preview-title{flex:1;min-width:0}
.preview-title strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.preview-title span{font-size:11px;color:var(--muted)}
.preview-head-actions{display:flex;gap:7px}
.preview-head-actions a,.preview-head-actions button{border-radius:7px;padding:8px 10px;text-decoration:none;font-size:12px}
.preview-head-actions a{background:var(--accent);color:#fff}
.preview-close{background:var(--soft);color:var(--accent);border:1px solid var(--line)}
.preview-body{flex:1;overflow:auto;background:#f1f4f6}
.preview-frame{width:100%;height:100%;border:0;background:#fff}
.preview-image-wrap{display:flex;justify-content:center;align-items:flex-start;padding:24px;min-height:100%}
.preview-image-wrap img{max-width:100%;height:auto;box-shadow:0 4px 20px rgba(0,0,0,.15);background:#fff}
.preview-text-wrap{padding:20px}
.preview-text{margin:0;background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px;white-space:pre-wrap;word-break:break-word;font:12px/1.55 Consolas,Monaco,monospace;min-height:100%}
.office-note{background:#fff8df;border:1px solid #ecd994;border-radius:8px;padding:10px 12px;margin-bottom:10px;font-size:12px}
.las-preview{display:grid;grid-template-columns:320px 1fr;gap:14px;padding:16px}
.las-card{background:#fff;border:1px solid var(--line);border-radius:9px;padding:15px}
.las-card h3{margin:0 0 12px;font-size:14px}
.las-grid{display:grid;grid-template-columns:110px 1fr;gap:7px;font-size:12px}
.las-grid dt{color:var(--muted);font-weight:700}
.las-grid dd{margin:0}
.las-curves{width:100%;border-collapse:collapse;font-size:12px}
.las-curves th,.las-curves td{text-align:left;border-bottom:1px solid #e8edf0;padding:7px 6px}
.las-curves th{color:var(--muted);font-size:10px;text-transform:uppercase}
.preview-empty{padding:40px;text-align:center;color:var(--muted)}
.preview-btn{background:var(--soft)!important;color:var(--accent)!important;border:1px solid var(--line)!important}
@media(max-width:800px){.preview-overlay{padding:8px}.preview-window{width:100%;height:96vh}.las-preview{grid-template-columns:1fr}.preview-head-actions .optional{display:none}}