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button.active{background:var(--ink);border-color:var(--ink);color:var(--panel)}.tool-grid{display:grid;gap:12px;grid-template-columns:repeat(4,minmax(0,1fr))}.tool-columns{align-items:start;display:grid;gap:28px;grid-template-columns:1fr}.tool-group{display:grid;gap:12px;scroll-margin-top:92px}.tool-group h2{align-items:center;border-bottom:1px solid var(--line);color:color-mix(in srgb,var(--ink) 72%,var(--muted));display:block;font-size:.78rem;letter-spacing:0;margin:0;padding:0 0 9px;pointer-events:none;text-transform:uppercase}.tool-group-list{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(210px,1fr))}.tool-tile{align-items:start;background:color-mix(in srgb,var(--panel) 92%,var(--suite-soft));border:1px solid var(--line);border-radius:8px;box-shadow:0 1px #1f2a2408;cursor:pointer;display:grid;gap:14px;grid-template-rows:auto minmax(0,1fr);min-height:142px;padding:16px;scroll-margin-top:92px;text-align:left;transition:border-color .16s ease,box-shadow .16s 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span{color:var(--muted);font-size:.9rem;line-height:1.28}.tool-icon{align-items:center;background:var(--suite-icon-bg);border:1px solid var(--suite-icon-border);border-radius:7px;color:var(--suite-accent-dark);display:inline-flex;height:42px;justify-content:center;width:42px}.tool-icon.large{height:52px;width:52px}.tool-icon.compact-icon{border-radius:7px;height:34px;width:34px}.tool-icon.tile-icon{border-radius:8px;height:44px;width:44px}.back-link{background:transparent;border:0;color:var(--muted);cursor:pointer;font-weight:800;margin-bottom:18px;padding:0}.workspace-grid{align-items:start;display:grid;gap:18px;grid-template-columns:minmax(0,1fr) 340px}.work-panel,.preview{background:var(--panel);border:1px solid var(--line);border-radius:8px}.work-panel{display:grid;gap:16px;padding:16px}.preview{min-height:340px;padding:14px;position:sticky;top:88px}.dropzone{border:1px dashed 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infinite}.sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;white-space:nowrap;width:1px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:980px){.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-columns,.workspace-grid,.merge-grid,.sign-grid,.sign-document{grid-template-columns:1fr}.merge-sidebar,.sign-palette{position:static}.signature-thumbs{display:flex;overflow-x:auto}.preview{position:static}}@media(max-width:760px){.topbar{padding:12px 14px}.topbar nav{gap:6px}.ghost-link{display:none}.dashboard,.tool-workspace{padding:24px 14px 42px}.workspace-title{align-items:flex-start;flex-direction:column}.workspace-title h1{font-size:2rem}.toolbar{grid-template-columns:1fr}.segmented{justify-content:flex-start}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-columns{grid-template-columns:1fr}.tool-group-list{grid-template-columns:repeat(2,minmax(0,1fr))}.dropzone-main,.merge-dropzone{grid-template-columns:auto 1fr}.merge-dropzone .button{grid-column:1 / -1}.merge-file-card{grid-template-columns:auto 30px 72px minmax(0,1fr)}.merge-card-actions{grid-column:3 / -1;justify-content:flex-end}.dropzone-main .button{grid-column:1 / -1}.options-grid{grid-template-columns:1fr}.file-row{grid-template-columns:auto minmax(0,1fr) auto}.file-actions,.file-size{display:none}.result-row{align-items:stretch;grid-template-columns:auto minmax(0,1fr)}.result-row .button{grid-column:1 / -1}}@media(max-width:460px){.tool-grid,.tool-group-list,.tool-columns,.thumbnail-grid{grid-template-columns:1fr}.metric-strip{justify-content:flex-start}.tool-card,.tool-tile{min-height:116px}}