:root{
    --paper:#f9f9f7;
    --card:#fcfcfb;
    --ink:#0b0b0b;
    --ink-2:#52514e;
    --ink-3:#52514e;
    --rule:#e1e0d9;
    --rule-2:#c3c2b7;
    --accent:#007d70;
    --on-accent:#ffffff;
    --band:#0d0d0d;
    --ok:#006300;
    --bad:#d03b3b;
    --accent-w:color-mix(in srgb, var(--accent) 10%, var(--card));
    --ok-w:color-mix(in srgb, var(--ok) 10%, var(--card));
    --bad-w:color-mix(in srgb, var(--bad) 10%, var(--card));
    --font-display:"Songti TC","Noto Serif CJK TC","Noto Serif TC",Georgia,serif;
    --font-body:"PingFang TC","Noto Sans TC","Microsoft JhengHei",-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
    --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  }
  :root[lang^="en"]{
    --font-display:Georgia,"Iowan Old Style","Songti TC","Noto Serif TC",serif;
    --font-body:-apple-system,BlinkMacSystemFont,system-ui,"Segoe UI","Helvetica Neue",Arial,"PingFang TC","Noto Sans TC",sans-serif;
  }
  @media (prefers-color-scheme: dark){
    :root{
      --paper:#0d0d0d; --card:#1a1a19; --ink:#ffffff; --ink-2:#c3c2b7; --ink-3:#898781;
      --rule:#2c2c2a; --rule-2:#383835;
      --accent:#02a998; --on-accent:#0b0b0b; --band:#f9f9f7;
      --ok:#0ca30c; --bad:#e66767;
    }
  }
  :root[data-theme="light"]{
    --paper:#f9f9f7; --card:#fcfcfb; --ink:#0b0b0b; --ink-2:#52514e; --ink-3:#52514e;
    --rule:#e1e0d9; --rule-2:#c3c2b7;
    --accent:#007d70; --on-accent:#ffffff; --band:#0d0d0d;
    --ok:#006300; --bad:#d03b3b;
  }
  :root[data-theme="dark"]{
    --paper:#0d0d0d; --card:#1a1a19; --ink:#ffffff; --ink-2:#c3c2b7; --ink-3:#898781;
    --rule:#2c2c2a; --rule-2:#383835;
    --accent:#02a998; --on-accent:#0b0b0b; --band:#f9f9f7;
    --ok:#0ca30c; --bad:#e66767;
  }

  html{font-size:clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);}
  body{
    margin:0; background:var(--paper); color:var(--ink);
    font-family:var(--font-body); line-height:1.7;
    -webkit-text-size-adjust:100%; -webkit-font-smoothing:antialiased;
  }
  .sheet{max-width:680px; margin:0 auto; padding:34px 20px 72px;}
  :where(button,select,summary):focus-visible{outline:2px solid var(--accent); outline-offset:2px;}
  .hide{display:none !important;}
  strong{font-weight:600;}

  .masthead{
    display:flex; align-items:flex-start; gap:16px;
    border-bottom:2px solid var(--ink); padding-bottom:14px; margin-bottom:26px;
  }
  .mast-text{flex:1 1 auto; min-width:0;}
  .eyebrow{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.18em;
    text-transform:uppercase; color:var(--ink-3);
  }
  h1{
    font-family:var(--font-display); font-weight:600;
    font-size:clamp(1.35rem, 1.22rem + 0.65vw, 1.8rem);
    letter-spacing:.02em; margin:6px 0 4px; text-wrap:balance;
    word-break:keep-all; overflow-wrap:anywhere;
  }
  .dek{color:var(--ink-2); font-size:.88rem; margin:0;}
  .lang{
    flex:0 0 auto; margin-top:2px;
    display:grid; grid-auto-flow:column; grid-auto-columns:minmax(3.1rem,1fr);
  }
  .lang button{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.08em; cursor:pointer;
    padding:4px 6px; border:1px solid var(--rule-2); border-right:0; background:transparent;
    color:var(--ink-2); border-radius:0; position:relative; text-align:center;
  }
  .lang button:last-child{border-right:1px solid var(--rule-2);}
  .lang button:hover{color:var(--accent); border-color:var(--accent); z-index:1;}
  .lang button[aria-pressed="true"]{
    background:var(--accent); border-color:var(--accent); color:var(--on-accent); z-index:1;
  }
  .mast-tools{flex:0 0 auto; margin-top:2px; display:flex; align-items:stretch; gap:6px;}
  .mast-tools .lang{margin-top:0;}
  .site-top{border-bottom:1px solid var(--rule); margin-bottom:22px;}
  .sheet:has(> .site-top){padding-top:0;}
  .theme-btn{
    display:inline-flex; align-items:center; justify-content:center; width:2rem; padding:0; cursor:pointer;
    border:1px solid var(--rule-2); border-radius:0; background:transparent; color:var(--ink-2);
  }
  .theme-btn:hover, .theme-btn:focus-visible{color:var(--accent); border-color:var(--accent);}
  .theme-btn svg{width:15px; height:15px; fill:none; stroke:currentColor; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round;}
  .theme-btn .ico-sun{display:none;}
  .theme-btn[data-mode="dark"] .ico-moon{display:none;}
  .theme-btn[data-mode="dark"] .ico-sun{display:inline;}

  .panel{background:var(--card); border:1px solid var(--rule); padding:24px 22px;}

  .state{font-family:var(--font-mono); font-size:.8rem; color:var(--ink-2); letter-spacing:.06em;}
  .state.err{border-left:3px solid var(--bad); padding-left:14px; font-family:var(--font-body); letter-spacing:0;}
  .state.err b{display:block; color:var(--bad); font-size:.95rem; margin-bottom:6px;}
  .state.err code{
    display:block; font-family:var(--font-mono); font-size:.75rem; color:var(--ink-2);
    background:var(--paper); border:1px solid var(--rule); padding:8px 10px; margin-top:10px;
    overflow-x:auto; white-space:pre-wrap; word-break:break-word;
  }

  .source{
    display:flex; align-items:center; gap:9px; flex-wrap:wrap;
    border:1px dashed var(--rule-2); padding:11px 13px;
  }
  .source .k{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.12em;
    text-transform:uppercase; color:var(--ink-3);
  }
  .source select{
    font-family:var(--font-body); font-size:1rem; font-weight:600; color:var(--ink);
    background:var(--card); border:1px solid var(--rule-2); border-radius:2px;
    padding:8px 10px; min-height:40px; max-width:100%; flex:1 1 190px; min-width:0;
  }
  .src-count{font-family:var(--font-mono); font-size:.72rem; color:var(--ink-2); font-variant-numeric:tabular-nums;}
  .btn.tiny{padding:5px 11px; font-size:.78rem; white-space:nowrap;}
  .preview{border:1px dashed var(--rule-2); border-top:0; padding:14px 13px 16px;}
  .preview-head{
    display:flex; justify-content:space-between; align-items:baseline; gap:12px; flex-wrap:wrap;
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; color:var(--ink-3);
  }
  .preview-head b{color:var(--accent); text-transform:uppercase; font-weight:600;}
  .preview-label{
    font-family:var(--font-mono); font-size:.68rem; letter-spacing:.12em; text-transform:uppercase;
    color:var(--ink-3); margin-top:14px;
  }
  .preview-q{font-size:.95rem; font-weight:600; line-height:1.7; margin-top:5px;}
  .preview-opts{list-style:none; margin:10px 0 0; padding:0; display:flex; flex-direction:column; gap:6px;}
  .preview-opts li{display:flex; gap:11px; align-items:flex-start; font-size:.9rem; color:var(--ink-2);}
  .preview-opts .box{
    flex:0 0 auto; width:22px; height:22px; border:1px solid var(--rule-2); border-radius:2px;
    display:grid; place-items:center; font-family:var(--font-mono); font-size:.7rem; color:var(--ink-3);
  }
  .preview-opts li.ok{color:var(--ok);}
  .preview-opts li.ok .box{background:var(--ok-w); border-color:var(--ok); color:var(--ok); font-weight:600;}
  .preview .exp{margin-top:12px;}
  .privacy{
    font-family:var(--font-mono); font-size:.72rem; line-height:1.8; letter-spacing:.04em;
    color:var(--ink-2); margin:9px 0 26px;
  }

  .track{display:flex; flex-direction:column; gap:9px; margin-bottom:26px;}
  .track-head{
    display:flex; justify-content:space-between; align-items:baseline; gap:14px;
    font-family:var(--font-mono); font-size:.85rem; letter-spacing:.08em; color:var(--ink-2);
    font-variant-numeric:tabular-nums;
  }
  .track-head strong{color:var(--ink); font-weight:600;}
  .ticks{
    display:grid; grid-template-columns:repeat(5,1fr);
    gap:9px 10px; padding:9px 0;
  }
  .tick-group{display:grid; grid-template-columns:1fr 1.9em; gap:6px; align-items:center;}
  .tick-cells{
    display:grid; grid-template-columns:repeat(var(--tick-cols,10),1fr);
    gap:4px; align-items:end; height:40px;
  }
  .tick-num{
    font-family:var(--font-mono); font-size:.75rem; letter-spacing:.06em;
    color:var(--ink-3); text-align:left; font-variant-numeric:tabular-nums;
  }
  .tick-void{visibility:hidden;}
  .tick{
    position:relative; height:30px; padding:0; cursor:pointer;
    border:0; border-radius:1px; background:var(--rule-2); touch-action:manipulation;
    transition:background .18s ease, height .18s ease;
  }
  .tick::after{content:""; position:absolute; inset:-5px -2px;}
  .tick.filled{background:var(--accent);}
  .tick.here{height:40px; background:var(--ink); box-shadow:inset 0 0 0 2px var(--card);}
  .tick.here.filled{background:var(--accent); box-shadow:inset 0 0 0 2px var(--card);}
  @media (prefers-reduced-motion: reduce){ .tick{transition:none;} }

  .qhead{
    display:flex; justify-content:space-between; gap:12px; align-items:baseline;
    font-family:var(--font-mono); font-size:.85rem; letter-spacing:.16em;
    color:var(--accent); text-transform:uppercase; font-variant-numeric:tabular-nums;
  }
  .qgroup{color:var(--ink-3); letter-spacing:.1em;}
  .qtext{font-size:clamp(1.08rem, 1.04rem + 0.2vw, 1.2rem); font-weight:600; line-height:1.75; margin:10px 0 20px; text-wrap:pretty;}
  .opts{display:flex; flex-direction:column; border-top:1px solid var(--rule);}
  .opt{
    display:flex; gap:14px; align-items:flex-start; width:100%; text-align:start;
    font:inherit; color:inherit; background:transparent; cursor:pointer;
    border:0; border-bottom:1px solid var(--rule); padding:13px 8px 13px 4px;
    transition:background .15s ease;
  }
  .opt:hover{background:var(--accent-w);}
  .opt .box{
    flex:0 0 auto; width:26px; height:26px; margin-top:1px;
    border:1.5px solid var(--rule-2); border-radius:2px;
    display:grid; place-items:center;
    font-family:var(--font-mono); font-size:.78rem; font-weight:600; color:var(--ink-2);
    transition:background .15s ease, border-color .15s ease, color .15s ease;
  }
  .opt[aria-checked="true"]{background:var(--accent-w);}
  .opt[aria-checked="true"] .box{background:var(--accent); border-color:var(--accent); color:var(--on-accent);}
  .opt[aria-checked="true"] .txt{font-weight:600;}
  .txt{padding-top:1px;}
  .opt:active{transform:scale(.995);}
  .opt.pick{animation:optPop .22s ease;}
  @keyframes optPop{ 0%{transform:scale(1);} 45%{transform:scale(1.012);} 100%{transform:scale(1);} }

  .in-next{animation:slideNext .2s ease both;}
  .in-prev{animation:slidePrev .2s ease both;}
  @keyframes slideNext{ from{opacity:0; transform:translateX(12px);} to{opacity:1; transform:none;} }
  @keyframes slidePrev{ from{opacity:0; transform:translateX(-12px);} to{opacity:1; transform:none;} }

  @media (prefers-reduced-motion: reduce){
    .opt, .opt .box{transition:none;}
    .opt:active{transform:none;}
    .opt.pick, .in-next, .in-prev{animation:none;}
  }

  .controls{display:flex; gap:10px; align-items:center; margin-top:22px; flex-wrap:wrap;}
  .controls:not(:has(> :not(.btn, .spacer))):not(:has(> .btn.tiny)){
    display:grid; grid-template-columns:repeat(auto-fill, minmax(12.5rem, 1fr)); align-items:stretch;
  }
  .controls:not(:has(> :not(.btn, .spacer))):not(:has(> .btn.tiny)) > .spacer{display:none;}
  .btn{
    font-family:var(--font-body); font-size:.9rem; font-weight:600; cursor:pointer;
    padding:9px 16px; border:1px solid var(--rule-2); background:transparent; color:var(--ink);
    border-radius:2px; transition:border-color .15s ease, color .15s ease, background .15s ease;
  }
  .btn:hover:not(:disabled){border-color:var(--accent); color:var(--accent);}
  a.btn{text-decoration:none; display:inline-block;}
  .btn:disabled{opacity:.45; cursor:not-allowed;}
  .btn.solid{background:var(--accent); border-color:var(--accent); color:var(--on-accent);}
  .btn.solid:hover:not(:disabled){background:var(--ink); border-color:var(--ink); color:var(--card);}
  .title-row{display:flex; align-items:center; gap:.3em; margin:6px 0 4px; font-size:clamp(1.35rem, 1.22rem + 0.65vw, 1.8rem);}
  .title-row h1{min-width:0; margin:0; font-size:1em;}
  .icon-btn{
    flex:none; display:inline-flex; align-items:center; justify-content:center;
    width:1.4em; height:1.4em; padding:0; cursor:pointer; font-size:1em;
    border:1px solid transparent; border-radius:50%; background:transparent; color:var(--ink-2);
    transition:border-color .15s ease, color .15s ease;
  }
  .icon-btn:hover, .icon-btn:focus-visible{color:var(--accent); border-color:var(--rule-2);}
  .icon-btn svg{width:.82em; height:.82em; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round;}
  .icon-btn .ico-done{display:none;}
  .icon-btn.copied{color:var(--accent);}
  .icon-btn.copied .ico-share{display:none;}
  .icon-btn.copied .ico-done{display:inline;}
  .spacer{flex:1 1 auto;}
  .hint{
    font-family:var(--font-mono); font-size:.74rem; color:var(--ink-2);
    margin:18px 0 0; letter-spacing:.04em;
  }
  .hint strong{border:1px solid var(--rule-2); border-radius:2px; padding:0 5px; font-weight:400;}

  .rules{list-style:none; margin:0; padding:0; display:flex; flex-direction:column;}
  .rules li{
    display:flex; gap:14px; padding:11px 0; border-bottom:1px solid var(--rule);
    font-size:.95rem; color:var(--ink-2);
  }
  .rules li:first-child{border-top:1px solid var(--rule);}
  .rules .k{
    flex:0 0 78px; font-family:var(--font-mono); font-size:.72rem; letter-spacing:.12em;
    text-transform:uppercase; color:var(--ink-3); padding-top:4px;
  }
  .rules strong{color:var(--ink);}
  .disclaimer{
    font-size:.84rem; color:var(--ink-2); line-height:1.65;
    border-left:2px solid var(--rule-2); padding-left:13px; margin:22px 0 0;
  }

  .doc{border-bottom:1px solid var(--rule);}
  .doc > summary{
    cursor:pointer; list-style:none; padding:13px 0; font-size:.95rem; font-weight:600;
    display:flex; gap:11px; align-items:flex-start;
  }
  .doc > summary::-webkit-details-marker{display:none;}
  .doc > summary::before{
    content:"+"; flex:0 0 auto; font-family:var(--font-mono); font-size:.9rem;
    color:var(--accent); line-height:1.6;
  }
  .doc[open] > summary::before{content:"–";}
  .doc .body{
    font-size:.9rem; color:var(--ink-2); line-height:1.85;
    padding:0 0 15px 26px; margin:0; white-space:pre-line;
  }
  .doc .body strong{color:var(--ink);}
  .doc .qlist{list-style:none; margin:0; padding:0 0 15px 26px;}
  .doc .qlist > li{padding:12px 0; border-top:1px solid var(--rule); font-size:.9rem; line-height:1.75; color:var(--ink-2);}
  .doc .qlist > li:first-child{border-top:0; padding-top:0;}
  .doc .qlist .q{margin:0; color:var(--ink); white-space:pre-line; overflow-wrap:anywhere;}
  .doc .qlist .opts{list-style:none; margin:6px 0 0; padding:0; overflow-wrap:anywhere;}
  .doc .qlist .ans{margin:6px 0 0; color:var(--ink); font-weight:600; overflow-wrap:anywhere;}

  .fmt-lead{font-size:.9rem; color:var(--ink-2); line-height:1.8; margin:16px 0 0;}
  .fmt-lead strong{color:var(--ink);}
  .inline-link{color:var(--accent); text-decoration:none; border-bottom:1px solid currentColor;}
  .inline-link:hover{color:var(--ink);}
  .codebar{
    display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-top:16px;
    font-family:var(--font-mono); font-size:.7rem; letter-spacing:.12em; color:var(--ink-3);
  }
  .code{
    font-family:var(--font-mono); font-size:.76rem; line-height:1.75; color:var(--ink-2);
    background:var(--card); border:1px solid var(--rule); border-radius:2px;
    padding:13px 15px; margin:8px 0 0; overflow-x:auto; white-space:pre; tab-size:2;
  }
  .doc .fields{margin:0; padding:0 0 15px 26px;}
  .doc .inner{padding:0 0 15px 26px;}
  .doc .inner p{font-size:.9rem; color:var(--ink-2); line-height:1.85; margin:0; white-space:pre-line;}
  .doc .inner p strong{color:var(--ink);}
  .doc .inner .code + p{margin-top:11px;}
  .fields > div{
    display:flex; gap:14px; flex-wrap:wrap;
    padding:9px 0; border-bottom:1px solid var(--rule);
  }
  .fields > div:last-child{border-bottom:0;}
  .fields dt{
    flex:0 0 126px; margin:0; padding-top:2px; color:var(--accent);
    font-family:var(--font-mono); font-size:.75rem; overflow-wrap:anywhere;
  }
  .fields dd{flex:1 1 190px; min-width:0; margin:0; font-size:.88rem; color:var(--ink-2);}
  .fields dd strong{color:var(--ink);}

  .scoreline{display:flex; align-items:flex-end; gap:18px; flex-wrap:wrap;}
  .score{
    font-family:var(--font-mono); font-size:clamp(3rem, 2.5rem + 2.2vw, 4rem); font-weight:600; line-height:.95;
    letter-spacing:-.03em; font-variant-numeric:tabular-nums;
  }
  .score em{font-style:normal; font-size:1rem; font-weight:500; color:var(--ink-2); letter-spacing:0;}
  .stamp{
    font-family:var(--font-mono); font-size:.76rem; letter-spacing:.16em; text-transform:uppercase;
    border:1.5px solid currentColor; padding:5px 12px; margin-bottom:6px;
  }
  .stamp.pass{color:var(--ok);}
  .stamp.fail{color:var(--bad);}
  .tally{
    display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:1px; margin-top:24px;
    background:var(--rule); border:1px solid var(--rule);
  }
  .tally div{background:var(--card); padding:12px 10px; text-align:center;}
  .tally b{
    display:block; font-family:var(--font-mono); font-size:1.3rem; font-weight:600;
    font-variant-numeric:tabular-nums;
  }
  .tally span{
    font-family:var(--font-mono); font-size:.7rem; letter-spacing:.08em;
    text-transform:uppercase; color:var(--ink-2); overflow-wrap:anywhere;
  }

  #clock.low{color:var(--bad); font-weight:600;}

  .timeup{
    display:flex; gap:10px; align-items:flex-start;
    margin-top:16px; padding:12px 14px;
    background:var(--bad-w); border-left:3px solid var(--bad);
    font-size:.88rem; line-height:1.7; color:var(--ink);
  }
  .timeup::before{
    content:"⏱"; flex:none; color:var(--bad); font-size:1rem; line-height:1.5;
  }
  .timeup-note{
    margin-top:14px; font-size:.82rem; color:var(--bad);
    font-family:var(--font-mono); letter-spacing:.02em;
  }

  .chapters{
    display:grid; gap:1px; margin-bottom:28px;
    background:var(--rule); border:1px solid var(--rule);
  }
  .chapter{
    display:grid; grid-template-columns:minmax(0,11em) 1fr auto; align-items:center; gap:14px;
    background:var(--card); padding:11px 14px;
  }
  .chapters.plain .chapter{grid-template-columns:minmax(0,1fr) auto;}
  .chapter-name{font-size:.9rem; color:var(--ink-2); overflow-wrap:anywhere;}
  .chapter-bar{
    display:block; height:8px; background:var(--rule); overflow:hidden;
  }
  .chapter-bar i{display:block; height:100%; background:var(--ok);}
  .chapter-bar i.low{background:var(--bad);}
  .chapter-count{
    font-family:var(--font-mono); font-size:.85rem; font-variant-numeric:tabular-nums;
    color:var(--ink-2);
  }

  .sec{
    font-family:var(--font-display); font-size:1rem; font-weight:600; letter-spacing:.03em;
    margin:34px 0 0; padding-bottom:9px; border-bottom:2px solid var(--ink);
  }
  .rev{border-bottom:1px solid var(--rule); padding:18px 0 18px 15px; border-left:3px solid var(--bad);}
  .rev.right{border-left-color:var(--ok);}
  .rev .tag{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.12em; color:var(--ink-2);
    font-variant-numeric:tabular-nums;
  }
  .rev .rq{font-weight:600; margin:5px 0 12px; line-height:1.7;}
  .row{display:flex; gap:11px; align-items:flex-start; font-size:.95rem; padding:5px 0;}
  .row .lb{
    flex:0 0 78px; font-family:var(--font-mono); font-size:.7rem; letter-spacing:.06em;
    text-transform:uppercase; padding-top:4px; overflow-wrap:anywhere;
  }
  .row.bad{color:var(--bad);}
  .row.ok{color:var(--ok);}
  .exp{font-size:.9rem; color:var(--ink-2); margin-top:10px; line-height:1.7;}
  .exp b{
    font-family:var(--font-mono); font-size:.7rem; letter-spacing:.08em; text-transform:uppercase;
    color:var(--ink-3); font-weight:600; margin-right:7px;
  }
  .clean{
    border-left:3px solid var(--ok); background:var(--ok-w); color:var(--ok);
    padding:14px 16px; font-weight:600; font-size:.95rem; margin-top:18px;
  }
  footer{
    margin-top:34px; padding-top:16px; border-top:1px solid var(--rule);
    font-size:.8rem; line-height:1.7; color:var(--ink-3);
  }
  footer nav{display:flex; flex-wrap:wrap; gap:6px 26px; margin-bottom:10px;}
  footer a{color:var(--ink-2); text-decoration:none;}
  footer a:hover{color:var(--accent);}
  footer a:focus-visible{outline:2px solid var(--accent); outline-offset:2px;}
  footer .sep{color:var(--ink-3);}
  footer .seg{white-space:nowrap;}

  .sec.first{margin-top:0;}
  .lead{font-size:.9rem; color:var(--ink-2); margin:14px 0 0;}
  .lead strong{color:var(--ink);}

  textarea, input[type="text"], input[type="number"], .field select{
    font-family:var(--font-body); font-size:.9rem; color:var(--ink);
    background:var(--card); border:1px solid var(--rule-2); border-radius:2px;
    padding:8px 10px; width:100%; box-sizing:border-box; min-width:0;
  }
  textarea{font-family:var(--font-mono); font-size:.78rem; line-height:1.7; min-height:150px; resize:vertical;}
  :where(input,textarea):focus-visible{outline:2px solid var(--accent); outline-offset:2px;}
  .field{display:block; margin-top:14px;}
  .field > span{
    display:block; font-family:var(--font-mono); font-size:.7rem; letter-spacing:.1em;
    text-transform:uppercase; color:var(--ink-3); margin-bottom:5px;
  }
  .field small{display:block; font-size:.78rem; color:var(--ink-3); margin-top:4px; line-height:1.6;}
  .grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:0 16px;}
  .checks{display:flex; flex-wrap:wrap; gap:12px 22px; margin-top:16px;}
  .check{display:flex; align-items:center; gap:8px; font-size:.88rem; color:var(--ink-2);}
  .check input{width:auto; accent-color:var(--accent);}

  .rows{margin:0; padding:0; list-style:none;}
  .rows li{
    display:flex; gap:12px; align-items:center; flex-wrap:wrap;
    padding:9px 0; border-bottom:1px solid var(--rule);
  }
  .rows .name{
    flex:1 1 120px; min-width:0; overflow-wrap:anywhere;
    font-family:var(--font-mono); font-size:.8rem; color:var(--accent);
  }
  .rows .have{font-family:var(--font-mono); font-size:.72rem; color:var(--ink-3);}
  .rows input[type="number"]{flex:0 0 92px; width:92px;}
  .rows input[type="text"]{flex:1 1 150px;}

  .note{
    font-family:var(--font-mono); font-size:.78rem; line-height:1.9; letter-spacing:.04em;
    color:var(--ink-2); margin-top:14px; white-space:pre-line;
  }
  .note.ok{color:var(--ok); border-left:3px solid var(--ok); background:var(--ok-w); padding:11px 14px;}
  .note.err{color:var(--ink); border-left:3px solid var(--bad); background:var(--bad-w); padding:11px 14px;}
  .note.warn{border-left:3px solid var(--rule-2); padding:11px 14px;}

  .preview.standalone{border-top:1px dashed var(--rule-2); margin-top:16px;}
  .copy-preview .preview-head{margin-bottom:10px;}
  .copy-title{font-family:var(--font-display); font-weight:600; font-size:1.3rem; line-height:1.4; margin:4px 0 2px; overflow-wrap:anywhere;}
  .copy-preview .slot{
    color:var(--ink-3); width:fit-content; max-width:100%; border:1px dashed var(--rule-2);
    padding:2px 8px; margin-block:6px;
  }
  .dropping{outline:2px dashed var(--accent); outline-offset:4px; background:var(--accent-w);}
  .drop-hint{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.06em; color:var(--ink-3);
    margin:9px 0 0;
  }
  .q-item > summary{gap:9px; align-items:center;}
  .q-item > summary > .q-num{padding-top:0;}
  .q-num{
    flex:0 0 auto; font-family:var(--font-mono); font-size:.74rem; color:var(--ink-3);
    padding-top:2px; font-variant-numeric:tabular-nums;
  }
  .q-title{flex:1 1 auto; min-width:0; font-weight:600; overflow-wrap:anywhere;}
  .q-title.empty{color:var(--ink-3); font-weight:400;}
  .q-add{margin-top:10px; display:flex; align-items:center; gap:14px; flex-wrap:wrap;}
  .q-add .q-flag{margin-top:0;}
  .q-item > summary > .q-group{
    flex:0 1 8rem; width:8rem; min-width:4.5rem; margin-left:auto; align-self:center; font-weight:400;
  }
  .q-body{padding:0 0 18px 26px;}
  .opt-rows{list-style:none; margin:8px 0 0; padding:0;}
  .opt-rows li{display:flex; gap:10px; align-items:center; padding:5px 0; flex-wrap:nowrap;}
  .opt-rows input[type="radio"], .opt-rows input[type="checkbox"]{width:auto; flex:0 0 auto; accent-color:var(--accent);}
  .copy-preview .rules{margin-top:12px;}
  .opt-rows input[type="text"]{flex:1 1 120px; min-width:0;}
  .opt-rows .btn{flex:0 0 auto;}
  .opt-grip{flex:0 0 auto; cursor:grab; color:var(--ink-3); user-select:none; font-size:.9rem; letter-spacing:-.15em; padding:0 4px;}
  .opt-rows li.dragging{opacity:.45;}
  .q-tools{display:flex; gap:8px; flex-wrap:nowrap; align-items:center; margin-top:14px;}
  .q-tools .spacer{flex:1 1 auto;}
  .q-flag{display:flex; align-items:center; gap:8px; font-size:.85rem; color:var(--ink-2); margin-top:12px;}
  .q-flag input{width:auto; accent-color:var(--accent);}
  .q-exp{margin-top:14px;}
  .q-exp > summary{
    cursor:pointer; width:fit-content; font-family:var(--font-mono); font-size:.7rem; letter-spacing:.1em;
    text-transform:uppercase; color:var(--ink-3);
  }
  .q-exp > summary{list-style:none; display:flex; align-items:center; gap:.6em;}
  .q-exp > summary::-webkit-details-marker{display:none;}
  .q-exp > summary::before{content:"+"; flex:0 0 auto; width:1ch; text-align:center; color:var(--accent);}
  .q-exp[open] > summary{margin-bottom:5px;}
  .q-exp[open] > summary::before{content:"–";}
  .controls.sticky{
    position:sticky; bottom:0; z-index:2; margin-top:18px;
    padding:12px 0 10px; background:var(--paper);
    border-top:1px solid var(--rule);
  }
  @media (pointer: coarse){
    .btn, .source select, textarea, input[type="text"], input[type="number"], .field select, .check{min-height:44px;}
    a.btn{display:inline-flex; align-items:center; justify-content:center;}
    .lang button, .home-top .lang a{min-height:44px; min-width:44px;}
    .home-top .lang a{display:flex; align-items:center; justify-content:center;}
    .theme-btn{width:44px; min-height:44px;}
    .icon-btn{min-width:44px; min-height:44px;}
    .q-exp > summary{min-height:44px;}
    footer a{display:inline-block; padding:11px 0; min-width:44px; text-align:center;}
    .ticks{grid-template-columns:repeat(2,1fr);}
    .tick-cells{height:44px;}
    .tick, .tick.here{height:44px;}
  }
  @media (max-width: 560px){
    .sheet{padding:26px 16px 64px;}
    textarea, input[type="text"], input[type="number"], .field select{font-size:16px; min-height:44px;}
    .q-body{padding-left:14px;}
    .doc .inner, .doc .fields{padding-left:14px;}
    .q-tools .btn, .checks .check{min-height:44px;}
    .rows li{gap:8px;}
    .rows .name{flex:1 1 100%;}
    .controls.sticky{padding-bottom:14px;}
    .controls .btn{flex:1 1 auto;}
    .controls:not(:has(> :not(.btn, .spacer))):not(:has(> .btn.tiny)){grid-template-columns:repeat(2, minmax(0, 1fr));}
    .ticks{grid-template-columns:1fr;}
    .chapter{grid-template-columns:1fr auto; row-gap:7px;}
    .chapter-bar{grid-column:1 / -1;}
  }
  .bar{height:3px; background:var(--rule); margin-top:14px; overflow:hidden; border-radius:2px;}
  .bar-fill{
    display:block; height:100%; width:0; background:var(--accent);
    transition:width .3s ease;
  }
  .skeleton{display:flex; flex-direction:column; gap:10px; margin-top:22px;}
  .sk-line{display:block; height:13px; border-radius:2px; background:var(--rule); opacity:.7;}
  .sk-a{width:62%;}
  .sk-b{width:88%;}
  .sk-c{width:40%;}
  @media (prefers-reduced-motion: reduce){
    .bar-fill{transition:none;}
  }
  @media (min-width: 900px){
    .sheet{max-width:760px;}
  }
  @media (min-width: 1100px){
    .sheet.wide{max-width:1020px;}
    .sheet.wide .grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));}
    .sheet.wide .opt-rows input[type="text"]{flex:1 1 340px;}
  }
  .qimage{margin:0 0 18px;}
  .qimage img{
    display:block; max-width:100%; height:auto; border:1px solid var(--rule);
    border-radius:2px; background:var(--card);
  }
  .preview .qimage{margin:12px 0 0;}
  .preview .qimage img{max-width:220px;}
  .rev .qimage{margin:8px 0 12px;}
  .rev .qimage img{max-width:260px;}
  .start-note{
    font-family:var(--font-mono); font-size:.72rem; line-height:1.8; letter-spacing:.04em;
    color:var(--ink-3); margin:10px 0 0;
  }
  .ack{
    border-left:3px solid var(--accent); background:var(--accent-w);
    padding:15px 17px; margin-top:16px;
  }
  .ack-text{font-size:.9rem; line-height:1.85; color:var(--ink); margin:0; white-space:pre-line;}
  .ack-text strong{font-weight:600;}
  .ack .controls{margin-top:12px;}
  @media (min-width: 900px){
    .import-row > #btnBlank{grid-column:-2 / -1;}
  }
  @media (min-width: 1400px){
    .sheet.wide{max-width:1160px;}
  }
  body.home{background:var(--paper);}
  .lat, .home-name.lat, .home-sub.lat{
    font-family:Georgia,"Iowan Old Style",-apple-system,BlinkMacSystemFont,system-ui,"Segoe UI",sans-serif;
  }
  .home-band{padding:0 20px;}
  .home-inner{max-width:900px; margin:0 auto;}
  .home-top{display:flex; align-items:center; gap:12px; padding:18px 0 16px;}
  .home-mark{font-family:var(--font-display); font-size:1.05rem; font-weight:600; letter-spacing:.03em;}
  .home-mark span{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.16em;
    text-transform:uppercase; color:var(--ink-3); display:block; margin-top:-2px;
  }
  .home-sp{flex:1 1 auto;}
  .home-top > a{font-size:.82rem; color:var(--ink-2); text-decoration:none;}
  .home-top > a:hover{color:var(--accent);}
  .home-top .lang{grid-auto-columns:minmax(3.1rem,1fr);}
  .home-top .lang a{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.08em; text-decoration:none;
    padding:4px 6px; border:1px solid var(--rule-2); border-right:0; color:var(--ink-2);
    text-align:center;
  }
  .home-top .lang a:last-child{border-right:1px solid var(--rule-2);}
  .home-top .lang a:hover{color:var(--accent); border-color:var(--accent);}
  .home-top .lang a[aria-current="page"]{background:var(--accent); border-color:var(--accent); color:var(--on-accent);}
  .home-stage{border-top:1px solid var(--rule); padding:34px 0 10px;}
  .home-stage h1{
    font-family:var(--font-display); font-weight:600; letter-spacing:.02em; margin:0 0 12px;
    font-size:clamp(1.5rem,1.2rem+1.5vw,2.1rem); line-height:1.45; text-wrap:balance;
  }
  .home-stage > p{margin:0; color:var(--ink-2); font-size:.95rem; max-width:54ch;}
  .home-marks{
    display:flex; flex-wrap:wrap; margin-top:20px;
    border:1px solid var(--rule); background:var(--card);
  }
  .home-marks div{flex:1 1 160px; padding:11px 14px; border-right:1px solid var(--rule);}
  .home-marks div:last-child{border-right:0;}
  .home-marks b{
    display:block; font-family:var(--font-mono); font-size:.76rem;
    letter-spacing:.08em; color:var(--ink);
  }
  .home-marks span{font-size:.76rem; color:var(--ink-3);}
  .home-stage > .home-jump{
    display:grid; grid-auto-flow:column; grid-auto-columns:1fr; width:max-content; max-width:100%;
    gap:10px; margin:22px 0 0;
  }
  .home-jump .btn, .home-acts .btn{
    display:flex; align-items:center; justify-content:center;
    text-align:center; white-space:nowrap; line-height:1.45; padding:11px 16px;
  }
  .home-acts{
    display:grid; grid-auto-flow:column; grid-auto-columns:1fr; width:max-content; max-width:100%;
    gap:10px;
  }
  .home-jump .btn, .home-acts .btn{text-decoration:none; display:inline-block;}
  .home-chapter{padding:44px 0 8px;}
  .home-no-label{font-family:var(--font-mono); font-size:.72rem; letter-spacing:.2em; color:var(--accent);}
  .home-chapter > h2{
    font-family:var(--font-display); font-weight:600; letter-spacing:.02em;
    font-size:clamp(1.25rem,1.1rem+.6vw,1.55rem); margin:8px 0;
  }
  .home-lead{color:var(--ink-2); font-size:.93rem; margin:0 0 22px; max-width:56ch;}
  .home-cols{display:grid; grid-template-columns:1fr; gap:0 34px;}
  .home-item{border-top:1px solid var(--rule); padding:14px 0;}
  .home-item h3{font-size:.95rem; font-weight:600; margin:0 0 4px;}
  .home-item p{margin:0; font-size:.87rem; color:var(--ink-2);}
  .home-tick{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.12em;
    text-transform:uppercase; color:var(--accent); display:block; margin-bottom:6px;
  }
  .home-bridge{
    margin:26px 0 0; padding:14px 16px; background:var(--card); border:1px solid var(--rule);
    font-size:.92rem; color:var(--ink-2);
  }
  .home-bridge strong{color:var(--ink); font-weight:600;}
  .home-byo{background:var(--band); color:var(--paper); margin-top:40px; padding:40px 20px;}
  .home-byo .home-inner{display:grid; grid-template-columns:1fr; gap:22px;}
  .home-kick{font-family:var(--font-mono); font-size:.7rem; letter-spacing:.2em; text-transform:uppercase; opacity:.7;}
  .home-byo h2{
    font-family:var(--font-display); font-weight:600; letter-spacing:.02em;
    font-size:clamp(1.3rem,1.1rem+1vw,1.75rem); margin:10px 0;
  }
  .home-byo p{margin:0 0 18px; opacity:.85; font-size:.92rem;}
  .home-acts{margin-bottom:0 !important;}
  .home-byo .btn{background:var(--paper); color:var(--ink); border-color:var(--paper);}
  .home-byo .btn:hover{background:transparent; color:var(--paper); border-color:var(--paper);}
  .home-byo .btn.ghost{background:transparent; color:var(--paper); border-color:currentColor; opacity:.85;}
  .home-flow{list-style:none; margin:0; padding:0; display:flex; flex-direction:column;}
  .home-flow li{
    display:flex; gap:12px; padding:10px 0; font-size:.87rem; opacity:.9;
    border-top:1px solid;
    border-color:color-mix(in srgb, var(--paper) 30%, transparent);
  }
  .home-flow li:last-child{
    border-bottom:1px solid;
    border-color:color-mix(in srgb, var(--paper) 30%, transparent);
  }
  .home-flow .k{
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.12em;
    opacity:.7; flex:0 0 58px; padding-top:3px;
  }
  .home-board-head{
    display:flex; align-items:baseline; gap:12px; margin:8px 0 0;
    font-family:var(--font-mono); font-size:.72rem; letter-spacing:.16em;
    text-transform:uppercase; color:var(--ink-3);
  }
  .home-board-head .line{flex:1 1 auto; height:1px; background:var(--rule-2);}
  .home-board{margin-top:12px; border-top:1px solid var(--ink);}
  .home-trip{
    display:grid; grid-template-columns:auto 1fr auto; gap:6px 18px; align-items:center;
    padding:16px 4px; border-bottom:1px solid var(--rule); text-decoration:none; color:inherit;
  }
  .home-trip:hover{background:var(--accent-w);}
  .home-no{
    font-family:var(--font-mono); font-size:.72rem; color:var(--ink-3); letter-spacing:.1em;
    align-self:start; padding-top:5px;
  }
  .home-main{min-width:0;}
  .home-name{display:block; font-size:1.12rem; font-weight:600; letter-spacing:.01em; margin-bottom:3px;}
  .home-sub{display:block; font-size:.8rem; color:var(--ink-3); margin-bottom:9px;}
  .home-tags{display:flex; gap:5px; flex-wrap:wrap;}
  .home-tags i{
    font-style:normal; font-family:var(--font-mono); font-size:.72rem; letter-spacing:.06em;
    color:var(--ink-2); border:1px solid var(--rule); background:var(--card); padding:2px 7px;
  }
  .home-end{display:flex; align-items:center; gap:14px; align-self:start; padding-top:3px;}
  .home-num{
    font-family:var(--font-mono); font-size:.74rem; color:var(--ink-2); text-align:right;
    font-variant-numeric:tabular-nums; line-height:1.5;
  }
  .home-num b{display:block; color:var(--ink); font-size:.86rem;}
  .home-go{
    font-family:var(--font-body); font-size:.84rem; font-weight:600; color:var(--accent);
    border:1px solid var(--accent); padding:7px 14px; border-radius:2px; white-space:nowrap;
    display:inline-block; min-width:112px; text-align:center;
  }
  .home-trip:hover .home-go{background:var(--accent); color:var(--on-accent);}
  .home-fine{
    font-family:var(--font-mono); font-size:.71rem; line-height:1.9; letter-spacing:.04em;
    color:var(--ink-2); border:1px dashed var(--rule-2); padding:12px 14px; margin:30px 0 0;
  }
  .home-foot{
    border-top:1px solid var(--rule); margin-top:34px; padding:16px 0 60px;
    font-size:.8rem; color:var(--ink-3);
  }
  .home-foot nav{display:flex; gap:6px 26px; flex-wrap:wrap; margin-bottom:10px;}
  .home-foot a{color:var(--ink-2); text-decoration:none;}
  .home-foot a:hover{color:var(--accent);}
  @media (min-width:760px){
    .home-cols{grid-template-columns:1fr 1fr;}
  }
  @media (min-width:820px){
    .home-byo .home-inner{grid-template-columns:1.1fr 1fr; align-items:center;}
  }
  @media (max-width:640px){
    .home-trip{grid-template-columns:1fr;}
    .home-no{padding-top:0;}
    .home-end{padding-top:10px; justify-content:space-between; width:100%;}
  }
  @media (max-width:640px){
    .home-stage > .home-jump, .home-jump, .home-acts{grid-auto-flow:row; width:auto;}
    .home-jump .btn, .home-acts .btn{white-space:normal;}
  }
  @media (max-width:600px){
    .home-top{gap:8px;}
    .home-top > a{display:none;}
    .home-mark{font-size:.95rem;}
  }