:root{--bg:#f4f6f9;--card:#fff;--text:#1b2430;--muted:#6b7684;--line:#dde2e8;--primary:#1f3a5f;--primary-soft:#e6edf6;--accent:#2f7d6d;--danger:#b3261e}@media (prefers-color-scheme:dark){:root{--bg:#11161d;--card:#1a212b;--text:#e6eaef;--muted:#98a2ae;--line:#2c3541;--primary:#7fa7d6;--primary-soft:#22303f;--accent:#5cc0a8;--danger:#ff8a80}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}a{color:var(--primary);text-decoration:none}h1{font-size:1.6rem;margin:0 0 .5rem}h2{font-size:1.15rem;margin:.25rem 0 .75rem}.wrap{max-width:1000px;margin:0 auto;padding:24px 16px 80px}.narrow{max-width:680px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:16px}.center{text-align:center}.bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}.sticky{position:-webkit-sticky;position:sticky;top:0;z-index:5;background:var(--bg);padding:10px 0}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.row>input{flex:1 1;min-width:140px}.between{justify-content:space-between}.grow{flex:1 1}.list{display:grid;grid-gap:4px;gap:4px}.listitem{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.muted{color:var(--muted)}.small{font-size:.85rem}.block{display:block}.pre{white-space:pre-wrap}.error{color:var(--danger)}label{display:block;font-size:.9rem;margin-bottom:10px}label.inline{display:inline-flex;gap:4px;align-items:center;margin:0}input,select,textarea{font:inherit;color:var(--text);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:8px 10px;width:100%;margin-top:4px}select{width:auto;margin-top:0}input[type=checkbox],input[type=radio]{width:auto;margin:0}textarea{resize:vertical}.btn{font:inherit;display:inline-block;cursor:pointer;padding:7px 14px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--text);white-space:nowrap}.btn:hover:not(:disabled){border-color:var(--primary)}.btn:disabled{opacity:.45;cursor:default}.btn.primary{background:var(--primary);color:var(--card);border-color:var(--primary)}.btn.danger{color:var(--danger)}.btn.ghost{border-color:transparent;background:transparent}.progress{height:6px;background:var(--line);border-radius:3px;margin-bottom:16px;overflow:hidden}.progress div{height:100%;background:var(--accent);transition:width .3s}.question{margin:22px 0}.qlabel{font-weight:600;font-size:1rem}.req{color:var(--danger)}.opts{grid-gap:6px}.likert,.opts{display:grid;gap:6px}.likert{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));grid-gap:6px}.opt{display:flex;gap:8px;align-items:center;margin:0;padding:9px 12px;border:1px solid var(--line);border-radius:8px;cursor:pointer;font-size:.92rem}.opt.sel{border-color:var(--primary);background:var(--primary-soft)}.opt.dis{opacity:.5}.info{padding:14px;margin:16px 0}.ai,.info{background:var(--primary-soft);border-radius:8px}.ai{margin-top:10px;padding:10px 12px}.section{border-left:4px solid var(--primary)}.qedit{border:1px solid var(--line);border-radius:10px;padding:12px;margin:12px 0;display:grid;grid-gap:8px;gap:8px}.qedit input:not([type=checkbox]):not(.qid),.qedit textarea,.qid{margin:0}.qid{width:70px!important;font-weight:600}.conds{display:grid;grid-gap:6px;gap:6px;padding:8px 10px;border-radius:8px;background:var(--bg)}.cond{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.cond select{max-width:320px}.chips{display:flex;flex-wrap:wrap;gap:4px}.chip{display:inline-flex;gap:4px;align-items:center;margin:0;padding:3px 9px;border:1px solid var(--line);border-radius:99px;font-size:.8rem;cursor:pointer}.chip.on{background:var(--primary);color:var(--card);border-color:var(--primary)}.chip input{display:none}