:root{--ink: #102a43;--ink-soft: #334e68;--muted: #627d98;--paper: #f4f6f8;--paper-2: #e4e7eb;--card: #ffffff;--line: #d9e2ec;--wax: #1b4f72;--wax-deep: #163a54;--wax-soft: #486581;--ok: #0f766e;--shadow: 0 1px 2px rgba(16, 42, 67, .06);--radius: 2px;--radius-sm: 1px;--sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;--serif: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font-family:var(--sans)}body{min-height:100dvh}button,input{font:inherit}.app{display:grid;grid-template-columns:176px 300px minmax(0,1fr) 176px;grid-template-rows:auto 1fr auto;grid-template-areas:"topbar topbar topbar topbar" "ad-left rail workspace ad-right" "footer footer footer footer";min-height:100dvh}.topbar{grid-area:topbar;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:12px 20px;padding:10px 22px 0;border-top:3px solid var(--wax);border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:8}.brand{display:flex;align-items:center;gap:12px;min-width:0;justify-self:start;padding-bottom:10px}.topbar-end{min-width:0}.mode-tabs{display:flex;justify-content:center;gap:28px;justify-self:center;background:transparent;border:0;padding:0}.mode-tab{border:0;border-bottom:2px solid transparent;background:transparent;color:var(--muted);padding:8px 2px 11px;font-weight:500;font-size:.95rem;cursor:pointer}.mode-tab:hover{color:var(--ink);background:transparent}.mode-tab.is-active{background:transparent;color:var(--ink);border-bottom-color:var(--wax);font-weight:600}.mode-tab.is-active:hover{background:transparent;color:var(--ink)}.brand strong{display:block;font-family:var(--sans);font-size:1.15rem;font-weight:600;letter-spacing:0;flex-shrink:0}.brand-headline{display:flex;align-items:baseline;gap:10px 14px;flex-wrap:wrap}.brand-tagline{font-size:.82rem;line-height:1.35;color:var(--muted);font-weight:400}.brand p,.fineprint,.drop-hint{margin:0;color:var(--muted);font-size:.82rem}.brand-desc{line-height:1.4;max-width:42rem;margin-top:4px}.seal{display:grid;place-items:center;flex-shrink:0}.seal img{display:block;width:36px;height:36px;object-fit:contain}.rail{grid-area:rail;display:flex;flex-direction:column;gap:14px;padding:18px 16px 20px;border-right:1px solid var(--line);background:#eef2f6}.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:none}.panel h2{margin:0 0 10px;font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--wax)}.drop{position:relative;display:grid;justify-items:center;gap:4px;padding:16px 12px;border:1px dashed #9fb3c8;border-radius:var(--radius);background:#f8fafc;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.drop:hover,.drop.dragover{border-color:var(--wax-soft);background:#f0f4f8}.drop input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.drop-icon{color:var(--wax);display:grid;place-items:center;min-height:36px}.drop-title{font-weight:500;font-size:.95rem}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.panel-head h2{margin:0}.help{margin:0 0 10px;color:var(--muted);font-size:.78rem;line-height:1.45}.help a{color:var(--wax)}.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink-soft)}.btn.ghost:hover{border-color:var(--wax-soft);color:var(--ink)}.btn.sm{padding:6px 10px;font-size:.78rem}.btn.download{display:block;text-align:center;text-decoration:none;background:#fff;color:var(--ink);border:1px solid var(--line);padding:10px 14px;border-radius:var(--radius-sm);font-weight:500}.btn.download:hover{background:#f0f4f8;border-color:var(--wax-soft)}.certs-box{margin-top:10px;max-height:220px;overflow:auto}.fallback-help{margin-top:0}.alt-path{margin-top:16px;padding:12px;border:1px solid var(--line);background:#f8fafc}.alt-path .btn,.certs-panel .btn,.certs-panel a.btn{margin-top:8px}a.btn{display:flex;align-items:center;justify-content:center;text-decoration:none;box-sizing:border-box}.page-sign-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;padding:8px 16px;border-top:1px solid var(--line);background:#fff}.page-sign-check{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--ink-soft)}.certs-msg,.certs-empty{margin:0;padding:10px 11px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#f8fafc;color:var(--ink-soft);font-size:.78rem;line-height:1.45}.certs-empty p{margin:0}.certs-empty p+p{margin-top:6px}.certs-list{display:grid;gap:8px}.cert-item{display:grid;gap:4px;width:100%;text-align:left;padding:10px 11px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;cursor:pointer}.cert-item:hover,.cert-item.selected{border-color:var(--wax-soft)}.cert-item.selected{box-shadow:0 0 0 2px #1b4f722e}.cert-item.expired{opacity:.7}.cert-item strong{font-size:.88rem}.cert-meta{color:var(--muted);font-size:.72rem;line-height:1.35}.cert-badges{display:flex;gap:6px;flex-wrap:wrap}.badge{font-size:.68rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ok)}.badge.warn{color:var(--wax)}.field{display:grid;gap:6px;margin-top:10px;font-size:.85rem;color:var(--ink-soft)}.field input{width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 12px;background:#fff;color:var(--ink)}.field input:focus{outline:2px solid rgba(27,79,114,.28);outline-offset:1px}.btn{border:0;border-radius:var(--radius-sm);padding:10px 12px;cursor:pointer;font-weight:500}.btn.full{width:100%}.btn.primary{background:var(--wax);color:#fff;padding:13px 14px;font-size:1rem}.btn.primary:hover:not(:disabled){background:var(--wax-deep)}.btn.header-sign{margin-top:0;flex-shrink:0;width:auto;padding:11px 18px;font-size:.95rem}.rail-sign{width:100%}.btn:disabled{opacity:.45;cursor:not-allowed}.panel .fineprint{margin-top:10px}.workspace{grid-area:workspace;display:grid;grid-template-rows:1fr auto auto auto;min-width:0;background:#eef2f6}.stage{position:relative;min-height:0;display:grid;place-items:center;padding:18px}.empty{max-width:420px;text-align:center;color:var(--ink-soft)}.empty h1{margin:8px 0;font-family:var(--sans);font-size:1.45rem;font-weight:600;color:var(--ink)}.empty p{margin:0;color:var(--muted);line-height:1.5}.empty-art{width:min(220px,70vw)}[hidden]{display:none!important}.stage-frame{width:100%;height:100%;display:grid;place-items:center}.stage-inner{position:relative;box-shadow:0 1px 4px #102a431f;border:1px solid var(--line);background:#fff}#pageCanvas{display:block;width:100%;height:100%}.sig-overlay{position:absolute;top:0;right:0;bottom:0;left:0;cursor:crosshair;touch-action:none}.sig-hint{position:absolute;top:10px;left:50%;transform:translate(-50%);margin:0;padding:8px 12px;border-radius:2px;background:#102a43e0;color:#fff;font-size:.78rem;font-weight:500;line-height:1.35;white-space:normal;max-width:min(92%,420px);text-align:center;pointer-events:none;z-index:2}.sig-box,.sig-drag,.sig-ink{position:absolute;border:2px dashed var(--wax);border-radius:4px;background:#1b4f721a;box-shadow:inset 0 0 0 1px #fffaf280;pointer-events:none;z-index:1}.sig-ink{border:0;background:transparent;box-shadow:none;z-index:2}.sig-overlay.is-place{cursor:pointer}.stage.is-zoomed .stage-inner{box-shadow:0 8px 28px #102a4329}.stage.is-zoomed .sig-box{background:#1b4f7208}.cpf-steps{margin:0;padding-left:1.2em;color:var(--ink-soft);font-size:.82rem;line-height:1.5}.cpf-steps li+li{margin-top:8px}.draw-toolbar{display:grid;gap:10px;padding:12px 16px 14px;border-top:1px solid var(--line);background:#fff}.draw-toolbar-msg{margin:0;color:var(--ink);font-size:.92rem;font-weight:500;line-height:1.4}.sig-pad-wrap{position:relative;width:min(100%,560px);height:128px;border:1px dashed #9fb3c8;border-radius:6px;background:repeating-linear-gradient(to bottom,#fbfcfe 0,#fbfcfe 27px,#e8eef4 28px);overflow:hidden}#padCanvas{display:block;width:100%;height:100%;touch-action:none;cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24'%3E%3Cpath d='M4 20l1.2-4.4L16.6 4.2a1.5 1.5 0 0 1 2.1 2.1L7.4 17.6z' fill='none' stroke='%23102A43' stroke-width='1.6'/%3E%3C/svg%3E") 2 22,crosshair}.sig-pad-hint{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;margin:0;color:#627d95;font-size:.95rem;font-weight:500;pointer-events:none}.sig-pad-wrap.has-ink .sig-pad-hint{display:none}.draw-toolbar-actions{display:flex;flex-wrap:wrap;gap:8px}.btn.action-done{background:#0f766e;color:#fff;padding:12px 16px;font-size:.95rem}.btn.action-done:hover:not(:disabled){background:#0c5f59}.btn.action-write{background:var(--wax);color:#fff;padding:12px 16px;font-size:.95rem}.btn.action-write:hover:not(:disabled){background:var(--wax-deep)}.btn.action-erase{background:#f4e6d4;color:#7c2d12;border:1px solid #e8c9a0;padding:12px 16px}.btn.action-erase:hover:not(:disabled){background:#edd5b8}.btn.action-move{background:#e4eef6;color:#163a54;border:1px solid #b6cfe0;padding:12px 16px}.btn.action-move:hover:not(:disabled){background:#d4e4f0}.sig-drag{border-style:solid;background:#1b4f7229}.thumbs{display:flex;gap:10px;overflow-x:auto;padding:10px 16px 16px;border-top:1px solid var(--line);background:#fff}.thumb{position:relative;flex:0 0 auto;width:72px;padding:0;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;cursor:pointer;overflow:hidden}.thumb.active{border-color:var(--wax);box-shadow:0 0 0 2px #1b4f7240}.thumb.will-sign{outline:2px solid rgba(47,93,69,.45)}.thumb-check{position:absolute;top:4px;left:4px;z-index:1;width:16px;height:16px;margin:0;accent-color:var(--ok)}.thumb canvas{display:block;width:100%;height:auto}.thumb span{display:block;padding:4px 0 6px;font-size:.7rem;color:var(--muted)}.ad-rail{display:flex;justify-content:center;align-items:flex-start;padding:18px 8px 20px;background:#eef2f6}.ad-rail-left{grid-area:ad-left;border-right:1px solid var(--line)}.ad-rail-right{grid-area:ad-right;border-left:1px solid var(--line)}.ad-slot{display:flex;align-items:center;justify-content:center;border:1px dashed var(--line);background:#f8fafc;color:var(--muted)}.ad-placeholder{font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase}.ad-slot-skyscraper{width:160px;min-height:600px}.ad-footer-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%;margin:14px 0 0}.ad-slot-footer{width:100%;min-height:90px}.ad-slot:has(ins.adsbygoogle){border:0;background:transparent;display:block}.ad-slot:has(ins.adsbygoogle) .ad-placeholder{display:none}.ad-slot ins.adsbygoogle{display:block}.site-footer{grid-area:footer;padding:18px 22px 22px;border-top:1px solid var(--line);background:#eef2f6;text-align:center}.site-footer p{margin:0 auto;max-width:640px;color:var(--muted);font-size:.82rem;line-height:1.55}.modal{padding:0;border:0;background:transparent;max-width:min(520px,calc(100vw - 32px))}.modal::backdrop{background:#102a4373}.modal-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 22px 18px;box-shadow:0 18px 40px #102a432e;color:var(--ink)}.modal-card h2{margin:0 0 16px;font-family:var(--sans);font-size:1.15rem;font-weight:600}.modal-body{display:grid;gap:16px}.modal-intro ol{margin:0;padding-left:1.2em}.modal-intro li+li{margin-top:6px}.modal-card p,.modal-card li{color:var(--ink-soft);font-size:.92rem;line-height:1.5}.modal-card p{margin:0 0 12px}.modal-card ol{margin:0 0 14px;padding-left:1.2em}.modal-warn{padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#f8fafc;font-size:.85rem!important}.modal-verify{margin:0;padding:10px 12px;border:1px solid var(--line);background:#fff}.modal-verify summary{cursor:pointer;font-size:.85rem;font-weight:600;color:var(--ink)}.modal-verify[open] summary{margin-bottom:10px}.hash-box{display:grid;gap:8px;margin:10px 0;padding:10px 12px;border:1px dashed var(--line);border-radius:var(--radius-sm);background:#fff}.hash-label{font-size:.72rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}.hash-value{display:block;font-size:.68rem;line-height:1.45;word-break:break-all;color:var(--ink-soft)}.hash-copy{justify-self:start}.modal-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.modal-actions .btn.download{flex:1 1 160px}.modal-actions .btn.ghost{flex:1 1 120px}@media(max-width:720px){.modal-body{gap:14px}}.toast{position:fixed;left:50%;bottom:22px;transform:translate(-50%) translateY(12px);max-width:min(480px,calc(100vw - 24px));padding:10px 14px;border-radius:var(--radius-sm);background:var(--ink);color:#f8fafc;line-height:1.4;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:20}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}@media(max-width:1100px){.brand-tagline{display:none}}@media(max-width:1200px){.app{grid-template-columns:280px minmax(0,1fr);grid-template-areas:"topbar topbar" "rail workspace" "footer footer"}.ad-rail-left,.ad-rail-right{display:none}}@media(max-width:860px){.app{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr) auto auto;grid-template-areas:"topbar" "workspace" "rail" "footer";min-height:100dvh}.topbar{padding:10px 14px 0;grid-template-columns:1fr;justify-items:stretch}.mode-tabs{justify-self:stretch;justify-content:center;gap:22px;border-top:1px solid var(--line)}.mode-tab{padding:10px 4px 11px;font-size:.88rem}.topbar-end{display:none}.btn.header-sign{padding:10px 12px;font-size:.88rem}.workspace{min-height:0;grid-template-rows:minmax(0,1fr) auto auto auto}.sig-pad-wrap{width:min(100%,520px);height:120px}.rail{max-height:42dvh;overflow:auto;border-right:0;border-top:1px solid var(--line);border-bottom:0;padding:12px}.ad-rail-left,.ad-rail-right{display:none}.site-footer{padding:16px 14px 20px}.stage{padding:12px}}@media(max-width:640px){.ad-footer-row{grid-template-columns:1fr}}@media(max-width:860px)and (min-width:560px){.rail{display:grid;grid-template-columns:1fr 1fr;align-items:start}.rail-sign{grid-column:1 / -1}}