:root{--ink:#142a3b;--muted:#657787;--line:#d9e3ea;--line-strong:#c4d2dc;--blue:#176f9e;--blue-dark:#0e587e;--blue-soft:#e9f6fd;--paper:#fff;--surface:#f3f7f9;--success:#27855e;--danger:#a64141;--radius:16px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-width:320px;color:var(--ink);background:#edf3f6;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:15px}button,input{font:inherit}button{color:inherit}button:focus-visible,input:focus-visible,summary:focus-visible,a:focus-visible{outline-offset:2px;outline:3px solid #176f9e47}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.app-page{min-height:100vh}.app-header{z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff0;border-bottom:1px solid #c4d2dcd9;justify-content:space-between;align-items:center;height:76px;padding:0 clamp(18px,4vw,60px);display:flex;position:sticky;top:0}.brand{color:inherit;align-items:center;gap:11px;text-decoration:none;display:flex}.brand-mark{color:#fff;background:var(--blue);border-radius:12px;place-items:center;width:40px;height:40px;display:grid;box-shadow:0 5px 14px #176f9e38}.brand>span:last-child{gap:1px;display:grid}.brand strong{letter-spacing:-.01em;font-size:16px}.brand small{color:var(--muted);font-size:11px}.privacy-pill{color:#235f7f;background:#f2faff;border:1px solid #cce2ee;border-radius:999px;align-items:center;gap:7px;padding:8px 11px;font-size:12px;font-weight:650;display:flex}.workspace{grid-template-columns:minmax(360px,500px) minmax(440px,1fr);align-items:start;gap:22px;width:min(1440px,100% - 36px);margin:0 auto;padding:24px 0 42px;display:grid}.controls{gap:16px;display:grid}.panel,.preview-panel,.action-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);box-shadow:0 8px 28px 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small{color:var(--muted);font-size:12px}.text-button{cursor:pointer;color:var(--blue);background:0 0;border:0;font-size:12px;font-weight:750}.margin-grid,.paper-settings{grid-template-columns:1fr 1fr;gap:11px;display:grid}.number-field{color:#476071;gap:6px;font-size:12px;font-weight:650;display:grid}.input-with-unit{border:1px solid var(--line-strong);background:#fff;border-radius:10px;grid-template-columns:minmax(0,1fr) auto;align-items:center;height:42px;display:grid;overflow:hidden}.input-with-unit:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px #176f9e1a}.input-with-unit input{width:100%;height:100%;color:var(--ink);background:0 0;border:0;outline:0;padding:0 10px;font-size:14px;font-weight:650}.input-with-unit>span{color:#738695;padding:0 10px 0 3px;font-size:12px;font-weight:600}.gap-field{margin-top:11px}.size-help{border-top:1px solid #edf1f4;margin-top:14px;padding-top:12px}.size-help 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var(--line);justify-content:space-between;align-items:center;gap:15px;padding:18px 21px;display:flex}.preview-header .eyebrow{margin-bottom:3px}.preview-header h2{letter-spacing:-.02em;margin:0;font-size:18px}.preview-header>span{color:var(--muted);background:#f1f5f7;border-radius:8px;padding:6px 9px;font-size:11px;font-weight:700}.preview-host{background-color:#e4ebef;background-image:radial-gradient(#cad5dc .7px,#0000 .7px);background-size:15px 15px;place-items:center;min-height:min(690px,100vh - 245px);padding:20px;display:grid;overflow:auto}.preview-canvas{background:#fff;border-radius:2px;max-width:100%;display:block;box-shadow:0 12px 33px #1e334130}.preview-empty{max-width:310px;color:var(--muted);text-align:center;place-items:center;gap:8px;display:grid}.preview-empty strong{color:#395162}.preview-empty>span:last-child{font-size:12px}.preview-placeholder{background:#fff;border:1px solid #bacbd5;border-radius:3px;grid-template-columns:120px 62px;height:170px;margin-bottom:12px;display:grid;overflow:hidden;box-shadow:0 10px 26px #1e334121}.placeholder-page{background:linear-gradient(#e6ecef 1px,#0000 1px) 0 0/100% 19px;border-right:1px solid #a9c8d9}.placeholder-notes{background-color:#fbfdff;background-image:linear-gradient(#d7edf9 1px,#0000 1px),linear-gradient(90deg,#d7edf9 1px,#0000 1px);background-size:14px 14px}.preview-hint{border-top:1px solid var(--line);color:var(--muted);text-align:center;background:#fbfcfd;margin:0;padding:11px 19px;font-size:11px}.spinner{border:3px solid #c9dce6;border-top-color:var(--blue);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite spin}footer{border-top:1px solid var(--line);color:var(--muted);background:#fff;justify-content:space-between;gap:18px;padding:20px clamp(18px,4vw,60px);font-size:11px;display:flex}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{50%{opacity:.45}}@media 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