:root{--document-tabs-height:42px;--toolbar-readouts-space:148px;--bg:#f4f6fb;--panel:#fff;--line:#dee2e6;--text:#212529;--muted:#6c757d;--brand:#0d6efd;--brand-strong:#0b5ed7;--brand-soft:#e7f1ff;--body-bg:linear-gradient(180deg, #f8f9fb 0%, var(--bg) 100%);--toolbar-bg:#fff;--toolbar-surface:#fff;--toolbar-surface-subtle:#f8f9fa;--toolbar-hover:#f3f7ff;--control-border:#ced4da;--control-hover-border:#9ec5fe;--workspace-bg:#eef2f7;--workspace-empty-bg:#f6f8fb;--index-bg:#0f172a;--index-workspace-bg:#182231;--index-scroll-bg:#1f2937;--index-text:#cbd5e1;--document-bg:#fff;--document-text:#0f172a;--tab-bg:#fffffff0;--tab-item-bg:#f8fafc;--tab-active-bg:#fff;--shadow-soft:0 .125rem .25rem #00000013;--shadow-control:0 .05rem .15rem #0000000a;--shadow-panel:0 18px 48px #0f172a1a, 0 2px 8px #0f172a0f;--shadow-page:0 16px 40px #0f172a14, 0 2px 8px #0f172a0f;--lightningcss-light:initial;--lightningcss-dark: 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#ffffffb3}.drop-overlay-icon{width:4rem;height:4rem;color:var(--brand);background:linear-gradient(135deg,#0d6efd2e,#2563eb1f);border-radius:999px;justify-content:center;align-items:center;display:inline-flex}.drop-overlay-icon svg{fill:none;stroke:currentColor;stroke-width:1.9px;stroke-linecap:round;stroke-linejoin:round;width:1.7rem;height:1.7rem}.drop-overlay-title{color:#0f172a;letter-spacing:-.02em;font-size:1.08rem;font-weight:800}.drop-overlay-caption{color:#475569;font-size:.9rem}.toolbar{top:calc(var(--document-tabs-height) + .35rem);z-index:90;box-shadow:none;pointer-events:none;background:0 0;border-bottom:0;flex-direction:column;align-items:flex-start;gap:.6rem;padding:0;display:flex;position:absolute;left:.75rem;right:.75rem}.toolbar>*{pointer-events:auto}.toolbar-actions{flex-wrap:wrap;align-items:center;gap:.6rem;min-width:0;display:flex}.toolbar-actions[hidden]{display:none!important}.toolbar-group{gap:0;display:flex}.toolbar-group-main{border:1px solid var(--line);background:var(--toolbar-surface);box-shadow:var(--shadow-control);border-radius:.5rem;align-items:center;display:inline-flex;overflow:hidden}.toolbar-group-main .toolbar-btn+.toolbar-btn{border-left:1px solid var(--line)}.toolbar-readouts{top:env(safe-area-inset-top,0px);white-space:nowrap;grid-template-columns:minmax(0,1fr) 32px;place-items:center end;column-gap:8px;display:grid;position:fixed;right:.75rem}.toolbar-top-line{min-height:14px;max-width:calc(var(--toolbar-readouts-space) - 52px);grid-area:1/1;justify-content:flex-end;align-items:center;gap:4px;display:flex}.theme-switch{flex-shrink:0;gap:2px;display:flex}.theme-choice{width:14px;height:14px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:3px;place-items:center;padding:0;display:grid}.theme-choice:hover{color:var(--text);background:var(--toolbar-hover)}.theme-choice[aria-pressed=true]{color:var(--brand-strong);background:var(--brand-soft)}.theme-choice:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}.theme-choice svg{fill:none;stroke:currentColor;stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round;width:10px;height:10px}.viewer-meta.toolbar-meta{background:0 0;border:0;flex-wrap:nowrap;grid-area:2/1;align-items:center;gap:0;margin:0;padding:0;display:flex}.visitor-counter{min-width:0;max-width:5.5rem;min-height:0;color:var(--text);text-shadow:none;white-space:nowrap;background:0 0;border:0;align-items:center;gap:0;padding:0;font-size:.5625rem;font-weight:400;line-height:1.2;display:inline-flex}.visitor-counter[hidden]{display:none!important}:root[data-theme=dark] .visitor-counter{color:#fff;text-shadow:0 1px 3px 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var(--brand-strong);outline-offset:1px}.whiteboard-size-wrap{align-items:center;gap:.5rem;display:flex}.whiteboard-size-input{width:140px}.whiteboard-size-value{min-width:3.2rem;color:var(--muted);font-size:.84rem;font-weight:600}.app-modal{z-index:120;place-items:center;padding:1.5rem;display:grid;position:fixed;inset:0}.app-modal[hidden]{display:none!important}.app-modal-backdrop{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#0f172a80;position:absolute;inset:0}.app-modal-panel{z-index:1;background:var(--panel);width:min(100%,720px);max-height:min(88vh,860px);color:var(--text);border:1px solid #94a3b859;border-radius:1rem;grid-template-rows:auto 1fr auto;display:grid;position:relative;overflow:hidden;box-shadow:0 30px 80px #0f172a47,0 8px 24px #0f172a1a}.app-modal-panel-compact{width:min(100%,560px);max-height:min(82vh,640px)}.pdf-password-panel{width:min(100%,520px)}.pdf-password-panel 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.viewer-workspace{grid-row:1}.viewer-workspace.is-empty{background:var(--workspace-empty-bg)}.floating-viewer-controls{z-index:30;bottom:20px;right:20px;right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));align-items:center;gap:10px;display:flex;position:absolute}.floating-download{color:#fff;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;background:#0f172af2;border:1px solid #94a3b852;border-radius:999px;justify-content:center;align-items:center;gap:9px;min-height:48px;padding:0 20px;font-family:inherit;font-size:14px;font-weight:600;line-height:1.2;transition:opacity .18s,background-color .18s;display:inline-flex;box-shadow:0 6px 24px #00000047}.floating-download:hover{background:#1e293b}.floating-download:focus-visible{outline-offset:3px;outline:3px solid #60a5fa}.floating-download.is-interacting:not(:focus-visible){opacity:.35}.floating-download:disabled{cursor:default}.floating-download-icon{fill:none;stroke:#60a5fa;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:21px;height:21px}.desktop-zoom-controls{color:#fff;background:#0f172af2;border:1px solid #94a3b852;border-radius:999px;align-items:center;height:48px;padding:0 4px;display:none;box-shadow:0 6px 24px #00000047}.desktop-zoom-controls button{color:#e2e8f0;cursor:pointer;background:0 0;border:0;border-radius:999px;min-width:40px;height:40px;padding:0 9px;font-family:inherit;font-size:23px}.desktop-zoom-controls button:hover{color:#fff;background:#334155}.desktop-zoom-controls button:focus-visible{outline-offset:-2px;outline:2px solid #60a5fa}.desktop-zoom-controls button:disabled{opacity:.4;cursor:default}.desktop-zoom-controls span{text-align:center;font-variant-numeric:tabular-nums;min-width:55px;font-size:13px}.desktop-zoom-controls .desktop-fit-width{color:#93c5fd;border-left:1px solid #475569;border-radius:0 999px 999px 0;margin-left:3px;padding:0 12px;font-size:12px}.desktop-zoom-controls[hidden]{display:none!important}@media (width>=901px){.desktop-zoom-controls{display:inline-flex}}.download-feedback{z-index:31;bottom:80px;right:20px;right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(80px + env(safe-area-inset-bottom,0px));color:#f8fafc;background:#172033;border:1px solid #94a3b852;border-radius:14px;width:calc(100% - 40px);max-width:320px;padding:14px 40px 14px 16px;font-size:13px;line-height:1.65;position:absolute;box-shadow:0 6px 24px #00000047}.download-feedback a{color:#93c5fd;text-underline-offset:3px;margin-top:6px;display:inline-block}.download-feedback button{color:#cbd5e1;cursor:pointer;background:0 0;border:0;border-radius:50%;width:36px;height:36px;font-size:24px;position:absolute;top:4px;right:4px}.download-feedback button:focus-visible{outline:2px solid 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