:root{--ink: #2b2519;--soft: #5c5340;--gold: #b8860b;--gold-text: #8a6508;--red: #c0392b;--paper: #fbf7ef;--line: #e3d9c4;--card: #fffdf8;--bg: #f1ead9;color-scheme:light}*{box-sizing:border-box}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;border:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}[hidden]{display:none!important}:focus-visible{outline:2px solid var(--gold);outline-offset:2px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Georgia,Iowan Old Style,serif}.app{max-width:1400px;margin:0 auto;padding:24px}header{display:flex;align-items:baseline;flex-wrap:wrap;gap:12px;margin-bottom:20px}header h1{margin:0;font-size:28px;letter-spacing:.02em}.header-spacer{flex:1}.layout{display:grid;grid-template-columns:340px 1fr;gap:24px;align-items:start}@media(max-width:860px){.layout{grid-template-columns:1fr}}.sidebar{display:flex;flex-direction:column;gap:16px}.drop{position:relative;border:1.5px dashed var(--line);border-radius:12px;text-align:center;background:var(--card);color:var(--soft);transition:border-color .15s,background .15s}.drop label{display:block;padding:22px 16px;cursor:pointer}.drop:hover,.drop-active{border-color:var(--gold);background:#fff}.drop strong{color:var(--ink)}.drop-file{display:block;margin-top:4px}.drop-thumb{display:block;margin:0 auto 10px;max-width:72px;max-height:72px;border:1px solid var(--line);border-radius:6px;background:var(--paper)}.drop input:focus-visible+label{outline:2px solid var(--gold);outline-offset:2px;border-radius:10px}.modes,.export{display:flex;gap:8px;flex-wrap:wrap}.chip{font-family:inherit;font-size:13px;padding:7px 14px;border:1px solid var(--line);border-radius:16px;background:var(--card);color:var(--ink);cursor:pointer;transition:border-color .15s,background .15s}.chip:hover:not(:disabled){border-color:var(--gold)}.chip-on{background:var(--ink);color:var(--paper);border-color:var(--ink)}.chip:disabled{opacity:.4;cursor:default}.control{display:flex;flex-direction:column;gap:4px}.control-label{font-size:13px;font-weight:700}.control-label em{color:var(--gold-text);font-style:normal;font-weight:400}.control-hint{font-size:11px;color:var(--soft)}.control input[type=range]{width:100%;accent-color:var(--gold)}.control textarea,.control select,.control input[type=text]{font-family:Georgia,serif;font-size:13px;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);resize:vertical}.control select{padding:6px 8px}.marks{display:flex;flex-wrap:wrap;gap:4px;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--card);max-height:190px;overflow-y:auto}.mark{position:relative;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:6px;background:var(--paper)}.mark em{position:absolute;right:1px;bottom:0;font-size:9px;font-style:normal;color:var(--gold-text)}.panel{display:flex;flex-direction:column;gap:8px}.group{border:1px solid var(--line);border-radius:8px;background:var(--card)}.group>summary{cursor:pointer;padding:8px 12px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--soft);list-style:none}.group>summary::-webkit-details-marker{display:none}.group>summary:before{content:"▸ ";color:var(--gold)}.group[open]>summary:before{content:"▾ "}.group-body{display:flex;flex-direction:column;gap:14px;padding:4px 12px 14px}.control-inline{display:flex;flex-direction:row;align-items:center;gap:8px}.control-inline input[type=color]{width:34px;height:22px;padding:0;border:1px solid var(--line);border-radius:4px;background:none}.control-inline input[type=checkbox]{accent-color:var(--gold)}.status{font-size:12px;color:var(--soft);min-height:1em;margin:0}.status:empty{min-height:0;margin:0}.err{color:var(--red)}.loading{display:flex;align-items:center;gap:.5em;font-size:12px;color:var(--soft)}.loading-spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.performance-warning{display:flex;align-items:center;gap:.5em;padding:8px;border:1px solid var(--gold);border-radius:4px;background:#b8860b1a;font-size:12px;color:var(--gold-text)}.error-details{margin-top:8px;padding:8px;border:1px solid var(--red);border-radius:4px;background:#c0392b1a}.error-summary{font-weight:700;cursor:pointer}.error-pre{margin:8px 0 0;padding:8px;background:var(--paper);border-radius:4px;font-size:12px;overflow-x:auto}.stage{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;min-height:400px;display:flex;align-items:center;justify-content:center}.stage>*{width:100%}.help{max-width:62ch;font-size:14px;line-height:1.55}.help:focus-visible{outline:2px solid var(--gold);outline-offset:4px}.help h2{margin:0 0 4px;font-size:20px}.help>p{margin:0 0 16px;color:var(--soft)}.help .group-body>p{margin:0 0 10px}.help .group-body>p:last-child{margin-bottom:0}.help dl{margin:0}.help dt{font-weight:700;margin-top:10px}.help dt:first-child{margin-top:0}.help dd{margin:2px 0 0;color:var(--soft)}.help kbd{font-family:inherit;font-size:12px;padding:1px 5px;border:1px solid var(--line);border-radius:4px;background:var(--paper)}.preview{width:100%}.preview svg{width:100%;height:auto;display:block}.stage-render{display:flex;flex-direction:column;gap:12px}.tour{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 10px;padding-bottom:10px;border-bottom:1px solid var(--line)}.tour b{font-size:15px;font-weight:700}.tour 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