.letter-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:18px}.rich-toolbar{display:flex;gap:6px;flex-wrap:wrap;padding:12px;background:#edf2f4;border:1px solid #dce4e8;position:sticky;top:0;z-index:3}.rich-toolbar button{background:white;color:#243a46;border:1px solid #cad5dc;padding:7px 10px}.rich-toolbar select{width:auto}.rich-toolbar label{display:flex;gap:5px;align-items:center}.rich-toolbar input{width:65px}.rich-paper{max-width:795px;min-height:540px;margin:24px auto;padding:44px;background:white;border:1px solid #cad5dc;box-shadow:0 6px 25px #243a4610;line-height:1.6;outline-offset:5px}.rich-paper table{width:100%;border-collapse:collapse}.rich-paper td,.rich-paper th{border:1px solid #c5cdd2;padding:10px;min-width:50px}.rich-paper [data-page-break]{border-top:2px dashed #6a8594;margin:25px 0;height:12px}.merge-library{display:flex;flex-direction:column;gap:6px}.merge-library button{text-align:left;padding:8px}.merge-library code{display:block;font-size:11px}.document-preview{width:100%;height:78vh;border:1px solid #cad5dc;background:#e9edef}[hidden]{display:none!important}@media(max-width:700px){.rich-paper{padding:18px}.rich-toolbar{position:static}.letter-cards{grid-template-columns:1fr}}