:root{
  --paper:#fbf8f1; --card:#ffffff; --ink:#1f2a3a; --muted:#636a76; --line:#e7e0d1;
  --accent:#1d6f6a; --accent-2:#b4532a; --good:#1f8a4c; --good-bg:#e8f6ee; --bad:#b42318; --bad-bg:#fdecea;
  --on-accent:#fff; --shadow:0 1px 2px rgba(31,42,58,.06),0 6px 24px rgba(31,42,58,.06);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --paper:#14181f; --card:#1b212b; --ink:#e8e4da; --muted:#9aa3b2; --line:#2b3340;
  --accent:#4fb8ae; --accent-2:#e08a5c; --good:#4cc47f; --good-bg:#16301f; --bad:#f07167; --bad-bg:#3a1c1c;
  --on-accent:#0e1b1a; --shadow:none;}}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--sans)}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--serif);line-height:1.2;font-weight:600}
h1{font-size:2.3rem;margin:.2em 0 .4em}
code{background:rgba(127,127,127,.12);padding:.1em .35em;border-radius:4px;font-size:.9em}
.top{display:flex;justify-content:space-between;align-items:center;padding:14px 28px;border-bottom:1px solid var(--line);background:var(--card)}
.brand{font-family:var(--serif);font-size:1.25rem;font-weight:600;color:var(--ink);text-decoration:none}
.mark{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--accent);color:var(--on-accent);margin-right:6px}
.top nav a{margin-left:20px;color:var(--muted);text-decoration:none;font-size:.95rem}
.top nav a:hover{color:var(--ink)}
main{max-width:1100px;margin:0 auto;padding:28px}
footer{text-align:center;color:var(--muted);font-size:.85rem;padding:40px 20px}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.75rem;font-weight:600;color:var(--accent-2);margin:0}
.lede{font-size:1.15rem;color:var(--muted);max-width:720px}
.muted{color:var(--muted)} .small{font-size:.85rem}
.hero{padding:30px 0 20px} .hero h1{font-size:2.8rem;max-width:800px}
.small-hero h1{font-size:2.4rem}
.btn{display:inline-block;border:1px solid var(--line);background:var(--card);color:var(--ink);padding:9px 16px;border-radius:10px;font:600 .95rem var(--sans);text-decoration:none;cursor:pointer}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn.ghost{background:transparent}
.small-btn{padding:6px 12px;font-size:.85rem;margin-top:10px}
.bar{height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.bar span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#2fa39a);border-radius:99px;transition:width .4s}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:20px}
.course-card{display:flex;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;color:var(--ink);text-decoration:none;box-shadow:var(--shadow)}
.course-card:hover{border-color:var(--accent)}
.course-card h2{margin:0 0 4px}
.course-card p{margin:.3em 0}
.book-spine{flex:0 0 74px;height:110px;border-radius:4px 8px 8px 4px;background:linear-gradient(90deg,#5b2c1d,#8a4a2f 12%,#7a3f27);display:grid;place-items:end center;padding-bottom:10px;color:#f3d9a4;font:600 .8rem var(--serif);box-shadow:inset -3px 0 0 rgba(0,0,0,.2)}
.chapter{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:6px 24px 14px;margin:22px 0;box-shadow:var(--shadow)}
.chapter-head{display:flex;justify-content:space-between;align-items:center}
.ch-num{color:var(--muted);font-size:1rem;font-weight:500;margin-right:6px}
.lesson-list{list-style:none;padding:0;margin:0}
.lesson-list li a{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:12px;padding:12px 6px;border-top:1px solid var(--line);color:var(--ink);text-decoration:none}
.lesson-list li a:hover .l-title{color:var(--accent)}
.l-title{font-weight:600}
.ring{width:26px;height:26px;border-radius:50%;background:conic-gradient(var(--accent) calc(var(--p)*1%),var(--line) 0);position:relative}
.ring::after{content:"";position:absolute;inset:5px;border-radius:50%;background:var(--card)}
.complete .ring::after{content:"✓";inset:0;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;font-size:.8rem;font-weight:700}
.lesson-layout{display:grid;grid-template-columns:230px 1fr;gap:40px}
.toc{position:sticky;top:20px;align-self:start;font-size:.92rem}
.toc-title{font-family:var(--serif);font-weight:600;font-size:1.1rem;margin:.2em 0 .6em}
.toc ol{padding-left:1.2em;margin:0}
.toc li{margin:.35em 0} .toc a{color:var(--muted);text-decoration:none}
.toc li.here a{color:var(--accent);font-weight:700}
.lesson{max-width:760px}
.prose blockquote{margin:1.2em 0;padding:12px 18px;border-left:4px solid var(--accent);background:rgba(29,111,106,.07);border-radius:0 10px 10px 0}
.prose blockquote p{margin:.3em 0}
.prose table{border-collapse:collapse;margin:1em 0}
.prose td,.prose th{border:1px solid var(--line);padding:6px 12px}
.history{margin:28px 0;background:#f5ecd9;border:1px solid #e6d5b0;border-radius:14px;padding:4px 22px;color:#3b2f1e;font-family:var(--serif);font-size:1.02rem}
@media (prefers-color-scheme:dark){.history{background:#2a2419;border-color:#4a3e28;color:#e9dcc0}}
.history summary{cursor:pointer;font-weight:700;padding:12px 0;font-size:1.05rem}
.exercises{margin-top:40px}
.ex-top{display:flex;justify-content:space-between;align-items:center;gap:20px}
.ex-top h2{margin:0}
.progress{min-width:220px} .progress .bar{margin-bottom:4px}
.ex-intro{font-weight:600}
.tips{background:var(--card);border:1px dashed var(--line);border-radius:12px;padding:8px 16px;margin:14px 0 18px;font-size:.92rem}
.tips summary{cursor:pointer;font-weight:600;color:var(--accent)}
.ex-heading{margin:26px 0 8px;padding:10px 16px;border-radius:10px;background:rgba(180,83,42,.08);font-weight:500}
.ex-heading p{margin:0}
.ex{display:grid;grid-template-columns:40px 1fr;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:12px 0;box-shadow:var(--shadow);transition:border-color .3s,background .3s}
.ex-num{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--paper);border:1px solid var(--line);font-weight:700;font-size:.9rem;color:var(--muted)}
.ex.solved{border-color:var(--good)} .ex.solved .ex-num{background:var(--good);border-color:var(--good);color:#fff}
.ex.revealed .ex-num{background:var(--accent-2);border-color:var(--accent-2);color:var(--on-accent)}
.prompt p{margin:.1em 0 .6em}
.part{margin:6px 0}
.part-label{display:block;font-size:.85rem;font-weight:600;color:var(--muted);margin-bottom:3px}
.field{display:flex;align-items:center;gap:8px}
.field input{flex:0 1 340px;font:1rem ui-monospace,SFMono-Regular,Menlo,monospace;padding:9px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);outline:none}
.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(29,111,106,.15)}
.part.ok input{border-color:var(--good);background:var(--good-bg)}
.part.no input{border-color:var(--bad);background:var(--bad-bg)}
.unit{color:var(--muted);font-size:.9rem}
.preview{min-height:1.6em;font-size:1.05rem;color:var(--muted);padding:3px 2px}
.preview .err{font-size:.8rem}
.yesno{display:flex;gap:8px}
.yesno label{border:1.5px solid var(--line);border-radius:10px;padding:6px 14px;cursor:pointer;font-weight:600}
.yesno input{margin-right:6px}
.part.ok .yesno label:has(input:checked){border-color:var(--good);background:var(--good-bg)}
.part.no .yesno label:has(input:checked){border-color:var(--bad);background:var(--bad-bg)}
.actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:6px}
.feedback{font-weight:600;font-size:.95rem}
.feedback.good{color:var(--good)} .feedback.bad{color:var(--bad)}
.hint,.revealed{margin-top:10px;padding:10px 14px;border-radius:10px;background:rgba(29,111,106,.08);font-size:.95rem}
.hint p{margin:0}
.revealed{background:rgba(180,83,42,.1)}
.pager{display:flex;justify-content:space-between;margin:40px 0}
.challenge{max-width:780px;margin:0 auto}
.scoreboard{display:flex;gap:16px;margin:18px 0 26px}
.scoreboard div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 22px;text-align:center;box-shadow:var(--shadow)}
.scoreboard b{display:block;font:700 2rem var(--serif);color:var(--accent)}
.scoreboard span{font-size:.8rem;color:var(--muted)}
.from{margin:22px 0 -4px}
.challenge .ex-heading{margin-top:6px}
.finish{text-align:center;background:var(--card);border:2px solid var(--accent);border-radius:16px;padding:20px;margin-top:30px}
@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.25)}100%{transform:scale(1)}}
.pop{animation:pop .35s ease}
@keyframes shake{20%,60%{transform:translateX(-4px)}40%,80%{transform:translateX(4px)}}
.shake{animation:shake .3s}
@media (max-width:800px){.lesson-layout{grid-template-columns:1fr}.toc{position:static}.hero h1{font-size:2rem}.cards{grid-template-columns:1fr}}
[hidden]{display:none!important}

/* ---- view settings: width and sidebar ---- */
.top nav{display:flex;align-items:center;gap:6px}
.tools{display:flex;align-items:center;gap:8px;margin-left:14px}
.tool,.seg button{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--card);color:var(--muted);border-radius:8px;padding:6px 10px;font:600 .85rem var(--sans);cursor:pointer}
.tool:hover,.seg button:hover{color:var(--ink);border-color:var(--accent)}
.tool svg,.seg svg{width:18px;height:14px;fill:none;stroke:currentColor;stroke-width:1.4}
#calc-toggle svg{height:16px;width:14px} #calc-toggle circle{fill:currentColor;stroke:none}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{border:0;border-radius:0;padding:6px 8px}
.seg button+button{border-left:1px solid var(--line)}
html[data-width=comfortable] [data-set-width=comfortable],html[data-width=wide] [data-set-width=wide],
html[data-width=full] [data-set-width=full],html:not([data-sidebar=hidden]) #sidebar-toggle,.tool.on{background:var(--accent);color:var(--on-accent)}
html[data-width=wide] main{max-width:1500px}
html[data-width=wide] .lesson{max-width:1100px}
html[data-width=full] main{max-width:none;padding:20px 24px}
html[data-width=full] .lesson,html[data-width=full] .challenge{max-width:none}
html[data-width=wide] .challenge{max-width:1100px}
html[data-width=full] .lesson-layout{gap:28px}
html[data-sidebar=hidden] .lesson-layout{grid-template-columns:1fr}
html[data-sidebar=hidden] .toc{display:none}
html[data-sidebar=hidden][data-width=comfortable] .lesson{margin:0 auto}
.field input{flex-basis:340px}
html[data-width=full] .field input,html[data-width=wide] .field input{flex-basis:420px}

/* ---- inline quick checks ---- */
.prose .ex.quick{margin:18px 0 26px;border-left:4px solid var(--accent-2)}
.quick .ex-num{background:var(--accent-2);border-color:var(--accent-2);color:var(--on-accent);font-size:1rem}
.quick.solved .ex-num{background:var(--good);border-color:var(--good)}
.quick-label{margin-bottom:2px}

/* ---- calculator and grapher ---- */
.calc{position:fixed;right:24px;bottom:24px;width:340px;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 40px rgba(0,0,0,.18);z-index:50;user-select:none;resize:both;overflow:hidden;min-width:300px;min-height:260px;max-width:calc(100vw - 16px);max-height:calc(100vh - 16px)}
.calc.graphing{width:700px;height:540px}
.calc.big{width:min(1040px,calc(100vw - 48px));height:min(760px,calc(100vh - 48px))}
.calc.big:not(.graphing){width:520px;height:min(720px,calc(100vh - 48px))}
.calc-head{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:6px 8px 6px 10px;cursor:move;border-bottom:1px solid var(--line);flex:none}
.calc-tabs{display:inline-flex;background:var(--paper);border:1px solid var(--line);border-radius:9px;padding:2px}
.calc-tabs button{border:0;background:none;border-radius:7px;padding:4px 12px;font:700 .8rem var(--sans);color:var(--muted);cursor:pointer}
.calc-tabs button.on{background:var(--accent);color:var(--on-accent)}
.calc-win{display:flex;align-items:center;gap:2px}
.calc-size,.calc-x{border:0;background:none;color:var(--muted);cursor:pointer;border-radius:6px;width:28px;height:28px;display:grid;place-items:center;padding:0}
.calc-size:hover,.calc-x:hover{color:var(--ink);background:var(--paper)}
.calc-size svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.calc-size.on{color:var(--accent)}
.calc-x{font-size:1.35rem;line-height:1}
.calc-pane{flex:1;min-height:0}
.calc-main{display:flex;flex-direction:column}
.calc-bar{display:flex;justify-content:space-between;align-items:center;padding:8px 12px 0}
.angle{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.angle button{border:0;background:var(--card);color:var(--muted);font:700 .7rem var(--sans);padding:3px 8px;cursor:pointer;letter-spacing:.04em}
.angle button+button{border-left:1px solid var(--line)}
.angle button.on{background:var(--accent);color:var(--on-accent)}
.h-clear{border:0;background:none;color:var(--muted);font:600 .72rem var(--sans);cursor:pointer;padding:2px 4px}
.h-clear:hover{color:var(--bad)}
.calc-hist{flex:1 1 auto;min-height:90px;max-height:none;overflow:auto;padding:6px 12px 2px;font:.8rem ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted);user-select:text}
.calc:not(.big):not([style*=height]) .calc-hist{height:170px}
.h-row{display:flex;flex-direction:column;align-items:flex-end;padding:3px 0;border-bottom:1px dashed var(--line)}
.h-row button{border:0;background:none;padding:1px 4px;border-radius:6px;cursor:pointer;font:inherit;color:inherit;text-align:right;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.h-row button:hover{background:var(--paper);color:var(--accent)}
.h-res b{color:var(--ink);font-size:1rem}
.h-res small{color:var(--muted);font-size:.78rem}
.h-name{color:var(--accent-2);font-weight:700}
.h-empty{text-align:center;padding:10px 0;font:.8rem var(--sans)}
.h-empty code{font-size:.75rem}
.calc-vars{display:flex;flex-wrap:wrap;gap:4px;padding:6px 12px 0;justify-content:flex-end}
.calc-vars:empty{display:none}
.var-chip{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:99px;background:var(--paper);font:600 .72rem ui-monospace,monospace;overflow:hidden}
.var-chip button,button.var-chip{border:0;background:none;color:var(--ink);font:inherit;padding:2px 8px;cursor:pointer}
.ans-chip{color:var(--accent)!important;font:600 .72rem ui-monospace,monospace!important;border:1px solid var(--line)!important;border-radius:99px;background:var(--paper)!important}
.var-chip .var-x{padding:2px 6px 2px 2px;color:var(--muted)}
.var-chip .var-x:hover{color:var(--bad)}
.var-chip button:hover{color:var(--accent)}
.calc-in{display:block;width:calc(100% - 24px);margin:6px 12px 0;text-align:right;font:1.2rem ui-monospace,monospace;padding:8px 10px;border:1.5px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);outline:none;user-select:text;flex:none}
.calc-in:focus{border-color:var(--accent)}
.calc-in.err{border-color:var(--bad)}
.calc-msg{min-height:1.3em;padding:1px 14px;font-size:.75rem;color:var(--good);text-align:right}
.calc-msg.bad{color:var(--bad)}
.calc-keys{display:grid;grid-template-columns:repeat(6,1fr);gap:5px;padding:2px 12px 12px;flex:none}
.calc-keys button{padding:8px 0;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--ink);font:600 .92rem var(--sans);cursor:pointer}
.calc-keys button:hover{border-color:var(--accent)}
.calc-keys button:active{transform:translateY(1px)}
.calc-keys .fn{font-size:.8rem;color:var(--muted)}
.calc-keys .op{color:var(--accent)}
.calc-keys .eq{grid-column:span 2;background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.calc.big .calc-keys button{padding:12px 0;font-size:1.05rem}
.calc.big .calc-keys .fn{font-size:.9rem}
/* grapher */
.graph-pane{display:grid;grid-template-columns:230px 1fr;min-height:0}
.calc.narrow .graph-pane{grid-template-columns:1fr;grid-template-rows:auto 1fr}
.g-side{border-right:1px solid var(--line);overflow:auto;padding:10px;min-height:0;user-select:text}
.calc.narrow .g-side{border-right:0;border-bottom:1px solid var(--line);max-height:min(200px,40vh)}
.g-list{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.g-row{display:grid;grid-template-columns:18px 1fr 22px;gap:6px;align-items:center}
.g-dot{width:16px;height:16px;border-radius:50%;border:2.5px solid var(--c);background:var(--c);cursor:pointer;padding:0}
.g-row.off .g-dot{background:transparent}
.g-row.off .g-in{opacity:.55}
.g-in{min-width:0;width:100%;font:.95rem ui-monospace,SFMono-Regular,Menlo,monospace;padding:6px 8px;border:1.5px solid var(--line);border-left:4px solid var(--c);border-radius:8px;background:var(--paper);color:var(--ink);outline:none}
.g-in:focus{border-color:var(--c)}
.g-row.err .g-in{border-color:var(--bad);border-left-color:var(--c)}
.g-del{border:0;background:none;color:var(--muted);font-size:1.15rem;cursor:pointer;padding:0;line-height:1}
.g-del:hover{color:var(--bad)}
.g-err{grid-column:2/4;font-size:.72rem;color:var(--bad);margin-top:-3px;line-height:1.3}
.g-err:empty{display:none}
.g-add{margin-top:8px;width:100%;border:1.5px dashed var(--line);background:none;border-radius:8px;padding:6px;color:var(--accent);font:600 .82rem var(--sans);cursor:pointer}
.g-add:hover{border-color:var(--accent)}
.g-points{margin-top:8px}
.g-h{margin:8px 0 4px;font:700 .7rem var(--sans);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.g-pt{display:flex;align-items:center;gap:6px;width:100%;border:0;background:none;padding:3px 4px;border-radius:6px;font:.8rem ui-monospace,monospace;color:var(--ink);cursor:pointer;text-align:left}
.g-pt:hover{background:var(--paper)}
.g-pt span{color:var(--muted);font-family:var(--sans);font-size:.72rem}
.g-pt.int b{font-size:.9rem}
.g-pt i,.g-note i{display:inline-block;width:9px;height:9px;border-radius:50%;flex:none;margin-right:-3px}
.g-pt i:last-of-type,.g-note i:last-of-type{margin-right:3px}
.g-note{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--muted);padding:3px 4px}
.g-help{font-size:.72rem;color:var(--muted);margin:10px 0 0;line-height:1.5}
.g-help code{font-size:.7rem;white-space:nowrap}
.calc.narrow .g-help{display:none}
.g-stage{position:relative;min-height:0;min-width:0;overflow:hidden}
.g-stage canvas{position:absolute;inset:0;display:block;touch-action:none;cursor:grab}
.g-stage canvas.dragging{cursor:grabbing}
.g-zoom{position:absolute;top:8px;right:8px;display:grid;gap:4px}
.g-zoom button{width:30px;height:30px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);font:700 1.05rem var(--sans);cursor:pointer;display:grid;place-items:center;padding:0;box-shadow:var(--shadow)}
.g-zoom button:hover{border-color:var(--accent);color:var(--accent)}
.g-zoom svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linejoin:round}
.g-coord{position:absolute;left:8px;bottom:6px;font:.75rem ui-monospace,monospace;color:var(--muted);background:var(--card);padding:1px 6px;border-radius:6px;pointer-events:none}
.g-coord:empty{display:none}
/* "Graph this" buttons in lesson text */
.graph-this{display:inline-flex;align-items:center;gap:3px;vertical-align:middle;margin:0 2px 0 6px;padding:1px 7px 1px 5px;border:1px solid var(--line);border-radius:99px;background:var(--card);color:var(--accent);font:600 .7rem var(--sans);cursor:pointer;line-height:1.5}
.graph-this:hover{border-color:var(--accent);background:rgba(29,111,106,.08)}
.graph-this svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.math.has-graph{position:relative;display:block}
.math.has-graph>.graph-this{position:absolute;right:0;top:50%;transform:translateY(-50%)}
@media (max-width:800px){.tools .seg,#sidebar-toggle span{display:none}}

/* ---- accounts ---- */
.inline-form{display:inline;margin:0}
.linklike{border:0;background:none;color:var(--muted);font:inherit;font-size:.95rem;cursor:pointer;margin-left:16px;padding:0}
.linklike:hover{color:var(--ink)}
.nav-btn{margin-left:14px;padding:6px 14px;color:#fff!important}
.who{display:inline-flex;align-items:center;gap:8px;color:var(--ink)!important;font-weight:600}
.avatar{width:28px;height:28px;border-radius:50%;background:var(--accent-2);color:var(--on-accent);display:grid;place-items:center;font-size:.85rem}
.auth-wrap{display:grid;place-items:center;padding:40px 0}
.auth-card{width:100%;max-width:440px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px 34px;box-shadow:var(--shadow)}
.auth-card h1{font-size:1.9rem;margin:0 0 4px}
.frow{margin:16px 0}
.frow label{display:block;font-weight:600;font-size:.9rem;margin-bottom:5px}
.frow input{width:100%;font:1rem var(--sans);padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);outline:none}
.frow input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(29,111,106,.15)}
.has-err input{border-color:var(--bad)}
.ferr,.form-err{color:var(--bad);font-size:.85rem;margin-top:4px}
.form-err{background:var(--bad-bg);padding:8px 12px;border-radius:8px}
.fhelp{color:var(--muted);font-size:.8rem;margin-top:4px}
.fhelp ul{margin:4px 0;padding-left:18px}
.wide-btn{width:100%;padding:12px;margin-top:8px;font-size:1rem}
.alt{text-align:center;margin-top:18px}
.recent{list-style:none;padding:0} .recent li{padding:8px 0;border-top:1px solid var(--line)}

/* ---- creatures ---- */
.creatures-link{display:inline-flex;align-items:center;gap:4px}
.mini svg{display:block;margin:-8px 0 -4px}
.coin{display:inline-block;width:22px;height:22px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#fff3b0,#f5c518 45%,#d49b00);border:2px solid #b07d00;vertical-align:-4px;margin-right:6px;box-shadow:inset 0 0 0 3px rgba(255,255,255,.25)}
.coin.sm{width:15px;height:15px;border-width:1.5px;margin-right:4px;vertical-align:-2px}
.coin-pill{display:inline-flex;align-items:center;background:#fff6d6;border:1px solid #f0d27a;border-radius:99px;padding:3px 12px;margin-left:14px;color:#7a5600!important;font-size:.9rem}
@media (prefers-color-scheme:dark){.coin-pill{background:#3a3115;border-color:#6b5520;color:#ffd866!important}}
.pet-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:30px;align-items:center;padding:40px 0}
.parade{display:flex;flex-wrap:wrap;justify-content:center}
.parade svg:nth-child(odd){animation:bob 2.4s ease-in-out infinite}.parade svg:nth-child(even){animation:bob 2.4s ease-in-out .6s infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes squish{0%,100%{transform:scale(1,1)}50%{transform:scale(1.04,.96)}}
.bob{animation:bob 2.6s ease-in-out infinite;transform-origin:50% 100%}
.mood-sad .bob,.mood-hungry .bob{animation:squish 3.5s ease-in-out infinite}
.stage{background:radial-gradient(ellipse at 50% 85%,rgba(29,111,106,.16),transparent 60%),linear-gradient(#eaf6f3,#fbf8f1);border-radius:20px;display:grid;place-items:center;padding:16px 0 6px}
@media (prefers-color-scheme:dark){.stage{background:radial-gradient(ellipse at 50% 85%,rgba(79,184,174,.2),transparent 60%),linear-gradient(#1d2a2c,#14181f)}}
.pet-btn{border:0;background:none;cursor:pointer;padding:0}
.pet-btn:active .bob{transform:scale(1.06,.92)}
.adopt h1{margin-bottom:10px}
.adopt-grid{display:grid;grid-template-columns:360px 1fr;gap:34px}
.adopt-preview{position:sticky;top:20px;align-self:start}
.sp-blurb{text-align:center;color:var(--muted);font-style:italic;min-height:3em}
.pick{display:flex;flex-wrap:wrap;gap:10px}
.pick input{position:absolute;opacity:0;pointer-events:none}
.pick-card{display:flex;flex-direction:column;align-items:center;background:var(--card);border:2px solid var(--line);border-radius:14px;padding:6px 14px 10px;cursor:pointer}
.pick input:checked+.pick-card{border-color:var(--accent);box-shadow:0 0 0 3px rgba(29,111,106,.18)}
.swatch{display:block;width:40px;height:40px;border-radius:50%;border:3px solid;cursor:pointer}
.pick input:checked+.swatch{outline:3px solid var(--ink);outline-offset:3px}
.name-in{font:1.1rem var(--sans);padding:10px 14px;border:1.5px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);width:min(360px,100%)}
.btn.big{display:block;margin-top:22px;padding:12px 36px;font-size:1.1rem}
.pet-layout{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.pet-card,.panel{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow)}
.pet-card{text-align:center}
.pet-name{margin:12px 0 0}
.stats{display:grid;gap:10px;margin:16px 0 6px;text-align:left}
.stats>div{display:grid;grid-template-columns:96px 1fr 104px;gap:10px;align-items:center;font-size:.9rem}
.stats b{font-size:.82rem;color:var(--muted);text-align:right;font-weight:600}
.meter{height:12px;border-radius:99px;background:var(--line);overflow:hidden}
.meter i{display:block;height:100%;border-radius:99px}
.meter.food i{background:linear-gradient(90deg,#ff922b,#ffc078)}
.meter.joy i{background:linear-gradient(90deg,#f06595,#faa2c1)}
.meter.xp i{background:linear-gradient(90deg,#4c6ef5,#91a7ff)}
.pet-side{display:grid;gap:16px}
.panel h3{margin:6px 0 10px;font-size:1.05rem}
.wallet{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center}
.wallet p{margin:2px 0 0}
.coin-big{font:700 2rem var(--serif);display:flex;align-items:center}
.coin-big .coin{width:30px;height:30px}
.boost{background:#fff6d6;border-color:#f0d27a;color:#6b4c00}
@media (prefers-color-scheme:dark){.boost{background:#3a3115;border-color:#6b5520;color:#ffd866}}
.inv{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:8px}
.inv form{margin:0}
.inv-item{display:grid;justify-items:center;width:104px;padding:8px 6px;border:1.5px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);cursor:pointer;font:.78rem var(--sans);position:relative}
.inv-item:hover{border-color:var(--accent)}
.inv-item span{font-weight:600;line-height:1.2;text-align:center}
.inv-item em{position:absolute;top:4px;right:6px;font-style:normal;font-weight:700;color:var(--accent-2)}
.inv-item small{margin-top:4px;color:var(--accent);font-weight:700}
.inv-item.worn{border-color:var(--accent);background:rgba(29,111,106,.08)}
.earned{list-style:none;padding:0;margin:0}
.earned li{display:flex;justify-content:space-between;padding:6px 0;border-top:1px solid var(--line);font-size:.9rem}
.toasts{display:grid;gap:8px;margin-bottom:16px}
.flash{padding:10px 16px;border-radius:12px;font-weight:600;background:var(--good-bg);color:var(--good);border:1px solid var(--good)}
.flash.error{background:var(--bad-bg);color:var(--bad);border-color:var(--bad)}
.flash.info{background:rgba(29,111,106,.08);color:var(--accent);border-color:var(--accent)}
.shop-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:6px}
.shop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:26px}
.shop-item{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 16px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.shop-item h3{margin:6px 0 2px;font-size:1.05rem}
.shop-item p{margin:2px 0}
.shop-item form{margin-top:auto;padding-top:10px}
.shop-art{display:grid;place-items:center;height:96px;background:var(--paper);border-radius:12px}
#toast-zone{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);display:grid;gap:8px;z-index:60;pointer-events:none}
.reward-toast{background:var(--card);border:2px solid #f0d27a;border-radius:14px;padding:10px 18px;box-shadow:0 10px 30px rgba(0,0,0,.18);font-weight:700;display:flex;align-items:center;gap:10px;animation:toastin .35s ease,toastout .4s ease 3.6s forwards}
.reward-toast.big{border-color:var(--accent)}
@keyframes toastin{from{transform:translateY(20px);opacity:0}}
@keyframes toastout{to{transform:translateY(10px);opacity:0}}
@media (max-width:900px){.pet-layout,.pet-hero,.adopt-grid{grid-template-columns:1fr}}

/* ---- Creature Quest (auto-battler) ---- */
.bt{display:grid;grid-template-columns:1fr 380px;gap:22px;align-items:start}
.bt-top{display:flex;justify-content:space-between;align-items:end;margin-bottom:10px}
.stage-nav{display:flex;align-items:center;gap:10px}
.stage-nav h1{margin:0;font-size:2rem;min-width:170px;text-align:center}
.stage-nav button{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--card);font-size:1.4rem;line-height:1;cursor:pointer;color:var(--ink)}
.stage-nav button:disabled{opacity:.35;cursor:default}
.auto{font-size:.85rem;color:var(--muted);margin-left:10px;display:flex;gap:6px;align-items:center}
.gold-box{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:8px 16px;box-shadow:var(--shadow)}
.gold-box b{font:700 1.7rem var(--serif)} .gold-box small{color:var(--muted)}
.gold-ico{display:inline-block;width:24px;height:24px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#fffbe0,#ffcf3f 45%,#e09a00);border:2px solid #a86f00;position:relative}
.gold-ico::after{content:"";position:absolute;inset:5px;border:1.5px solid rgba(168,111,0,.5);border-radius:50%}
.gold-ico.sm{width:14px;height:14px;border-width:1.5px;vertical-align:-2px}.gold-ico.sm::after{display:none}
.arena{position:relative;height:430px;border-radius:22px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);user-select:none}
.arena::after{content:"";position:absolute;left:0;right:0;bottom:0;height:90px;background:linear-gradient(transparent,rgba(0,0,0,.06))}
.kills{position:absolute;top:16px;left:50%;transform:translateX(-50%);display:flex;gap:6px;z-index:2}
.kills i{width:14px;height:14px;border-radius:50%;background:rgba(255,255,255,.7);border:2px solid rgba(0,0,0,.15)}
.kills i.on{background:#ffcf3f;border-color:#a86f00}
.boss-tag{background:#b42318;color:#fff;font-weight:800;padding:4px 14px;border-radius:99px;letter-spacing:.04em}
.boss-timer{position:absolute;top:50px;left:50%;transform:translateX(-50%);width:260px;height:14px;border-radius:99px;background:rgba(0,0,0,.12);overflow:hidden;z-index:2}
.boss-timer i{display:block;height:100%;background:linear-gradient(90deg,#f03e3e,#ff922b)}
.boss-timer span{position:absolute;inset:0;text-align:center;font:700 .7rem/14px var(--sans);color:#fff}
.party{position:absolute;left:6%;bottom:34px;z-index:1;display:flex;align-items:flex-end}
.hero{position:relative;z-index:2;animation:bob 2.6s ease-in-out infinite}
.hero.lunge svg{animation:lunge .18s ease}
@keyframes lunge{50%{transform:translateX(28px) rotate(6deg)}}
.ally-row{display:flex;flex-wrap:wrap-reverse;width:236px;margin-left:-8px;gap:0 2px}
.mini-ally svg{width:42px;height:auto;display:block}
.mini-ally.hop svg{animation:hop .35s ease}
@keyframes hop{50%{transform:translateY(-12px)}}
.foe{position:absolute;right:7%;bottom:30px;width:300px;text-align:center;z-index:1;transition:opacity .3s,transform .3s}
.foe.dead{opacity:0;transform:scale(.6) translateY(30px)}
.foe.enter{animation:enter .35s ease}
@keyframes enter{from{opacity:0;transform:translateX(60px)}}
.foe-name{font:700 1.15rem var(--serif);color:#2a2233}
.hp{position:relative;height:18px;border-radius:99px;background:rgba(0,0,0,.15);overflow:hidden;margin:6px 20px 4px;border:2px solid rgba(0,0,0,.12)}
.hp i{display:block;height:100%;background:linear-gradient(90deg,#e03131,#ff6b6b);transition:width .08s}
.hp span{position:absolute;inset:0;font:700 .72rem/14px var(--sans);color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.4)}
.foe-art{border:0;background:none;padding:0;cursor:crosshair;width:240px;display:block;margin:0 auto}
.foe-art svg{width:100%;height:auto;display:block;animation:bob 2s ease-in-out infinite}
.foe-art svg.boss{transform-origin:50% 100%;width:115%;margin-left:-7%}
.foe-art.hurt svg{animation:hurt .15s ease}
@keyframes hurt{50%{transform:scale(.94,1.04) translateX(6px);filter:brightness(1.4)}}
.fx{position:absolute;inset:0;pointer-events:none;z-index:3}
.dmg{position:absolute;font:800 1.25rem var(--sans);color:#fff;text-shadow:0 2px 0 #c92a2a,0 0 6px rgba(0,0,0,.35);animation:floatup .9s ease-out forwards;white-space:nowrap}
.dmg.crit{font-size:2rem;color:#ffe066;text-shadow:0 2px 0 #e8590c,0 0 8px rgba(0,0,0,.35)}
.dmg.gold-pop{color:#ffd43b;text-shadow:0 2px 0 #a86f00;font-size:1.1rem}
.dmg.ally-pop{color:#e7f5ff;text-shadow:0 2px 0 #1c7ed6;font-size:1rem}
@keyframes floatup{to{transform:translateY(-70px);opacity:0}}
.bt-stats{display:flex;gap:12px;margin-top:12px;flex-wrap:wrap;align-items:stretch}
.bt-stats>div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:8px 16px}
.bt-stats small{display:block;color:var(--muted);font-size:.75rem}
.bt-stats b{font:700 1.3rem var(--serif)}
.boost-chip{background:#fff6d6!important;border-color:#f0d27a!important;color:#6b4c00;display:flex;align-items:center;gap:6px;font-weight:600}
.hint-chip{color:var(--muted);font-size:.85rem;display:flex;align-items:center}
.shop-col{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:12px 12px 8px;box-shadow:var(--shadow);height:calc(100vh - 110px);min-height:520px;max-height:900px;display:flex;flex-direction:column;position:sticky;top:16px}
.buy-amt{display:flex;gap:4px;align-items:center;margin-bottom:10px;font-size:.85rem;color:var(--muted)}
.buy-amt span{margin-right:auto;font-weight:700}
.buy-amt button{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:4px 10px;font:600 .8rem var(--sans);cursor:pointer;color:var(--ink)}
.buy-amt button.on{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.up{display:grid;grid-template-columns:56px 1fr auto;gap:10px;align-items:center;padding:8px;border-radius:12px;border:1px solid var(--line);margin-bottom:8px;background:var(--paper)}
.up-art svg{width:56px;height:auto;display:block}
.up-info b{display:block;font-size:.95rem}
.up-info small{display:block;font-size:.75rem}
.hero-up{border-color:var(--accent);background:rgba(29,111,106,.06)}
.cost-btn{border:0;border-radius:10px;background:#ffcf3f;color:#5c3d00;font:700 .85rem var(--sans);padding:8px 10px;cursor:pointer;min-width:84px;box-shadow:0 2px 0 #c79100}
.cost-btn:disabled{background:var(--line);color:var(--muted);box-shadow:none;cursor:default}
.cost-btn:not(:disabled):active{transform:translateY(2px);box-shadow:none}
.save-note{margin:4px 4px 0}
.shop-tabs{display:flex;gap:4px;border-bottom:2px solid var(--line);margin:0 -2px 8px;flex:none}
.shop-tabs button{position:relative;flex:1 1 auto;border:0;background:none;padding:10px 4px 8px;font:700 .8rem var(--sans);white-space:nowrap;color:var(--muted);cursor:pointer;border-radius:10px 10px 0 0;margin-bottom:-2px;border-bottom:3px solid transparent}
.shop-tabs button:hover{color:var(--ink);background:var(--paper)}
.shop-tabs button.on{color:var(--accent);border-bottom-color:var(--accent);background:var(--paper)}
.shop-tabs .badge{position:absolute;top:-6px;right:-3px;z-index:1;min-width:17px;height:17px;padding:0 5px;border-radius:99px;background:#c92a2a;color:#fff;font:800 .64rem/17px var(--sans);font-style:normal;box-shadow:0 1px 0 rgba(0,0,0,.2);animation:badgepop .3s ease}
@keyframes badgepop{from{transform:scale(.4)}}
.shop-panes{flex:1;min-height:0;overflow:auto;padding:0 2px;overscroll-behavior:contain}
.shop-foot{flex:none;border-top:1px solid var(--line);margin-top:6px}
.shop-foot .ascend{margin:8px 0 2px;padding:7px 10px}.shop-foot .ascend .muted{display:none}.shop-foot .save-note{font-size:.72rem}
.ally-filter{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:.78rem;color:var(--muted);margin:-2px 2px 8px}
.ally-filter label{display:flex;align-items:center;gap:5px;cursor:pointer}
.ally-up.far{opacity:.55}
.up-hint a{font-weight:700;color:#8445a3;text-decoration:none;font-size:.74rem}
.pane-note{margin:8px 4px}
.pane-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:0 2px 8px}
.pane-head b{display:block;font-size:.95rem}.pane-head small{display:block;font-size:.72rem;color:var(--muted)}
.mini-btn{border:1px solid #f0b400;background:#fff6d6;border-radius:9px;padding:6px 9px;font:700 .74rem var(--sans);color:#5c3d00;cursor:pointer;white-space:nowrap}
.mini-btn:disabled{border-color:var(--line);background:var(--paper);color:var(--muted);cursor:default}
.urow{display:grid;grid-template-columns:40px 1fr auto;gap:8px;align-items:center;padding:6px 8px;border:1px solid var(--line);border-radius:12px;background:var(--paper);margin-bottom:6px}
.urow.ready{background:#fffbea;border-color:#f0d27a}
.urow.locked{opacity:.6}
.u-art svg{width:40px;height:auto;display:block}
.u-info b{display:block;font-size:.85rem}
.u-info small{display:flex;align-items:center;gap:3px;font-size:.74rem}
.u-info small svg{width:16px;height:16px}
.u-info .m{font-weight:800;color:#8445a3}
.u-lock{font:700 .74rem var(--sans);color:var(--muted);padding:0 6px}
.urow .cost-btn{min-width:76px;font-size:.78rem;padding:7px 8px}
.ups-sub{margin:12px 4px 6px;font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.gups-owned{display:flex;flex-wrap:wrap;gap:4px;align-items:center;margin:10px 2px}
.own-chip{display:inline-flex;align-items:center;gap:1px;border:1px solid #58c49c;background:#e6f6ee;color:#2f6f57;border-radius:99px;padding:1px 6px 1px 2px;font:700 .7rem var(--sans)}
.own-chip svg{width:18px;height:18px}
.gups{display:grid;gap:5px;margin-top:6px}
.gup{display:grid;grid-template-columns:24px 1fr auto;gap:8px;align-items:center;text-align:left;border:1px solid var(--line);background:var(--card);border-radius:10px;padding:5px 8px;cursor:pointer;color:var(--ink);font:inherit}
.gup .gi b{display:block;font-size:.82rem}.gup .gi small{display:block;font-size:.7rem;color:var(--muted)}
.gup .gc{font:700 .75rem var(--sans);white-space:nowrap;color:#5c3d00}
.gup.ready{background:#fff6d6;border-color:#f0b400;box-shadow:0 2px 0 #c79100}
.gup.ready:active{transform:translateY(1px);box-shadow:none}
.gup:disabled{cursor:default}
.gup.locked{opacity:.5}.gup.locked .gc{color:var(--muted)}
.gup.owned{display:none}
.pet-actions{display:flex;gap:10px;justify-content:center;margin-top:10px}
@media (max-width:1000px){.bt{grid-template-columns:1fr}.shop-col{position:static;height:75vh;min-height:460px}}

/* ---- Marginalia: world map, shopfronts, fountain ---- */
.world-head{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-bottom:14px}
.world-head h1{font-size:2.8rem;margin:.1em 0}
.world-buddy{display:flex;flex-direction:column;align-items:center;text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:18px;padding:10px 20px;box-shadow:var(--shadow);min-width:170px;text-align:center;font-size:.85rem}
.map-frame{border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:0 10px 40px rgba(58,47,74,.12)}
.world-map{display:block;width:100%;height:auto}
.world-map .pname{font:700 15px Georgia,serif;fill:#3a2f4a}
.world-map .psub{font:12px Inter,system-ui,sans-serif;fill:#7a6f88}
.world-map .place .ico{transition:transform .2s;transform-box:fill-box;transform-origin:50% 100%}
.world-map a:hover .ico{transform:translateY(-6px) scale(1.06)}
.world-map a:hover .label rect{fill:#fff6d6}
.world-map .soon{opacity:.45;filter:grayscale(1)}
.map-tip{text-align:center;margin-top:8px}
.fountain-note{display:block;text-align:center;background:#fff6d6;border:1px solid #f0d27a;color:#6b4c00;border-radius:12px;padding:10px;margin-bottom:14px;font-weight:600;text-decoration:none}
.shopfront{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:22px}
.awning{height:34px;background:repeating-linear-gradient(90deg,var(--shop) 0 40px,#fff 40px 80px);border-bottom:3px solid rgba(0,0,0,.08)}
.awning{position:relative}
.awning::after{content:"";position:absolute;left:0;right:0;bottom:-12px;height:12px;background:radial-gradient(circle at 20px 0,var(--shop) 12px,transparent 13px) 0 0/80px 12px,radial-gradient(circle at 60px 0,#fff 12px,transparent 13px) 0 0/80px 12px;filter:drop-shadow(0 2px 0 rgba(0,0,0,.06))}
.shopfront-body{display:grid;grid-template-columns:190px 1fr auto;gap:22px;align-items:center;padding:20px 26px 18px}
.shopfront h1{margin:.1em 0 .3em}
.keeper svg{display:block;animation:bob 2.8s ease-in-out infinite}
.bubble{position:relative;background:var(--paper);border:1.5px solid var(--line);border-radius:16px;padding:12px 16px;max-width:560px}
.bubble::before{content:"";position:absolute;left:-10px;top:22px;border:10px solid transparent;border-right-color:var(--line);border-left:0}
.next-door{text-align:center}
.fountain-page{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:30px 0}
.fountain-art{width:100%;max-width:460px}
.fountain-art .stars{opacity:.25}
.fountain-art.sparkle .stars{opacity:1;animation:twinkle 1.6s ease-in-out infinite}
@keyframes twinkle{50%{opacity:.3}}
.fountain-art .jet{stroke-dasharray:12 8;animation:flow 1s linear infinite}
@keyframes flow{to{stroke-dashoffset:-20}}
.fountain-buddy{margin-top:16px}
.fountain-buddy svg{animation:bob 2.6s ease-in-out infinite}
@media (max-width:900px){.world-head,.fountain-page{flex-direction:column;grid-template-columns:1fr}.shopfront-body{grid-template-columns:1fr}}

.ascend{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:10px;border-radius:12px;margin:12px 0 4px;background:linear-gradient(135deg,#2b2140,#4b3a78);color:#efe7ff}
.ascend small{display:block;font-size:.75rem}.ascend .muted{color:#b9acd9}
.asc-btn{border:0;border-radius:10px;padding:9px 12px;font:700 .82rem var(--sans);background:#b197fc;color:#21173a;cursor:pointer}
.asc-btn:disabled{background:#5a4a86;color:#a99bd0;cursor:default}

.asc-badge{display:inline-block;background:#2b2140;color:#e5dbff;border-radius:99px;padding:4px 14px;font-weight:700;font-size:.85rem}
.book-done{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;background:linear-gradient(135deg,#2b2140,#4b3a78);color:#efe7ff;border-radius:16px;padding:16px 20px;margin:12px 0 18px}
.big-asc{padding:12px 18px;font-size:.95rem}

/* ---- Quillquest (turn-based adventure) ---- */
.qq{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:20px;align-items:start;width:min(1380px,calc(100vw - 48px));margin-left:calc((100% - min(1380px,calc(100vw - 48px)))/2)}
.q-top{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:8px}
.q-title{margin:0;font-size:1.9rem}.q-title small{display:block;font:600 .9rem var(--sans);color:var(--muted);margin-top:2px}
.q-help{margin:0;text-align:right}.q-help kbd{font:600 .72rem var(--sans);border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:0 4px;background:var(--card)}
.q-stage{--on-accent:#fff;--accent:#1d6f6a;--accent-2:#b4532a;--good:#1f8a4c;--bad:#b42318;--paper:#fbf8f1;--card:#fffdf6;--ink:#1f2a3a;--muted:#585f6c;--line:#d9d0bc;color:var(--ink);color-scheme:light;position:relative;border-radius:18px;overflow:hidden;border:3px solid #3a2f4a;box-shadow:var(--shadow);background:#2a2233;aspect-ratio:20/13}
.q-map{display:block;width:100%;height:100%;cursor:pointer;user-select:none}
.q-hero{transition:transform .13s linear}
.q-hero svg{overflow:visible}
.q-hero.flip>svg{transform:scaleX(-1);transform-origin:20px 0;transform-box:view-box}
.q-hero>svg{animation:qbob 1.6s ease-in-out infinite}
@keyframes qbob{50%{transform:translateY(-2px)}}
.q-hero.bonk>svg{animation:qbonk .2s ease}
@keyframes qbonk{30%{transform:translateX(3px)}70%{transform:translateX(-3px)}}
.q-sparkle{animation:qtw 1.4s ease-in-out infinite}
@keyframes qtw{50%{opacity:.15}}
.q-bang{animation:qbob 1s ease-in-out infinite}
.q-boss svg{animation:qbob 1.2s ease-in-out infinite}
.q-exit{opacity:.85}
.q-banner{position:absolute;top:14px;left:50%;transform:translateX(-50%);background:rgba(42,34,51,.85);color:#fff6d6;font:700 1.15rem var(--serif);padding:8px 22px;border-radius:99px;pointer-events:none}
.q-banner.show{animation:qban 2.2s ease forwards}
@keyframes qban{0%{opacity:0;transform:translate(-50%,-8px)}12%,80%{opacity:1;transform:translate(-50%,0)}100%{opacity:0}}
.q-dialog{position:absolute;left:3%;right:3%;bottom:4%;display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;background:#fffdf6;border:3px solid #3a2f4a;border-radius:16px;padding:10px 16px;box-shadow:0 8px 0 rgba(0,0,0,.18);cursor:pointer;z-index:5}
.q-portrait svg{width:62px;height:auto;display:block}
.q-who{font:700 .95rem var(--serif);color:#6b4c9a}
.q-text{margin:2px 0 0;font-size:1rem;line-height:1.45}
.q-more{align-self:end;color:#6b4c9a;animation:qbob 1s ease-in-out infinite}
.q-modal{position:absolute;inset:0;background:rgba(42,34,51,.45);display:grid;place-items:center;z-index:8;padding:14px}
.q-card{background:var(--card);border:3px solid #3a2f4a;border-radius:16px;padding:14px 18px;width:min(560px,100%);max-height:100%;overflow:auto;box-shadow:0 10px 0 rgba(0,0,0,.18)}
.q-qhead{display:flex;justify-content:space-between;align-items:center;font:700 1.1rem var(--serif)}
.q-stars{color:#f59f00;letter-spacing:2px}
.q-sub{margin:4px 0 8px;color:var(--muted);font-size:.9rem}
.q-src{font-size:.72rem;color:#6741b0;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.q-heading{font-size:.9rem;color:var(--muted);margin-top:4px}.q-heading p{margin:0}
.q-prompt{font-size:1.25rem;margin:6px 0 10px}.q-prompt p{margin:0}
.q-form{display:flex;gap:8px}
.q-in{flex:1;font:1.1rem var(--sans);padding:9px 12px;border:2px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink)}
.q-in:focus{outline:none;border-color:var(--accent)}
.q-preview{min-height:1.6em;margin:6px 2px 0;color:var(--muted)}
.q-hint{display:block;margin:2px 2px 8px}
.q-timer{position:relative;height:14px;border-radius:99px;background:var(--line);overflow:hidden;margin:4px 0 10px}
.q-timer i{display:block;height:100%;width:100%;background:linear-gradient(90deg,#f59f00,#ffd43b);transition:width .1s linear}
.q-timer span{position:absolute;inset:0;text-align:center;font:700 .7rem/14px var(--sans);color:#5c3d00}
.q-actions{display:flex;justify-content:flex-end;gap:8px}
.q-result{margin-top:8px;padding:8px 12px;border-radius:10px;font-weight:600}
.q-result.good{background:#e6f6ee;color:#2f6f57;border:1px solid #58c49c}
.q-result.bad{background:#fff4e6;color:#8a4b0f;border:1px solid #f0b46a}
.q-shop-list{display:grid;gap:6px;margin:10px 0}
.q-shop-row{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center;padding:6px 10px;border:1px solid var(--line);border-radius:10px;background:var(--paper)}
.q-shop-row small{display:block;font-size:.75rem;color:var(--muted)}
.q-purse,.q-shop-row .cost-btn{display:inline-flex;align-items:center;gap:5px}
.q-penny{display:inline-block;width:13px;height:13px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#e3d5ff,#9775fa 50%,#5f3dc4);border:1.5px solid #3b2a6b;vertical-align:-2px}
/* battle */
.q-battle{position:absolute;inset:0;display:grid;grid-template-rows:1fr auto;z-index:6;background:linear-gradient(180deg,#e6f0fb,#cdeccf)}
.q-battle.theme-forest{background:linear-gradient(180deg,#d3f9d8,#a7d39f)}
.q-battle.theme-cave{background:linear-gradient(180deg,#8f87a0,#d8d1c4)}
.q-battle.theme-keep{background:linear-gradient(180deg,#4b3a78,#c9bde6)}
.qb-scene{position:relative;overflow:hidden}
.qb-foe{position:absolute;right:6%;top:6%;display:flex;flex-direction:column;align-items:center;width:38%}
.qb-foe-art svg{width:min(210px,24vw);height:auto;display:block;animation:qbob 1.8s ease-in-out infinite}
.qb-foe-art.gone svg{animation:qgone .7s ease forwards}
@keyframes qgone{to{opacity:0;transform:scale(.4) translateY(40px)}}
.qb-hero{position:absolute;left:6%;bottom:2%;display:flex;align-items:flex-end;gap:12px;width:60%}
.qb-hero-art svg{width:min(150px,17vw);height:auto;display:block;animation:qbob 2s ease-in-out infinite}
.qb-foe-art.hit svg,.qb-hero-art.hit svg{animation:qhit .3s ease}
@keyframes qhit{30%{transform:translateX(8px);filter:brightness(1.6)}70%{transform:translateX(-6px)}}
.qb-plate{background:rgba(255,253,246,.94);border:2px solid #3a2f4a;border-radius:12px;padding:6px 12px;min-width:190px;box-shadow:0 4px 0 rgba(0,0,0,.15);margin-bottom:6px}
.qb-plate b{font-family:var(--serif)}.qb-plate small{display:block;font-size:.7rem;color:var(--muted)}
.qb-tag{background:#b42318;color:#fff;font:800 .62rem var(--sans);padding:1px 7px;border-radius:99px;vertical-align:2px}
.qb-st{color:#8445a3!important;font-weight:700}
.qb-bar{height:9px;border-radius:99px;background:rgba(0,0,0,.12);overflow:hidden;margin:3px 0 1px}
.qb-bar i{display:block;height:100%;border-radius:99px;transition:width .3s}
.qb-bar.hp i{background:linear-gradient(90deg,#e03131,#ff8787)}
.qb-bar.mp i{background:linear-gradient(90deg,#4263eb,#74c0fc)}
.qb-bar.xp i{background:linear-gradient(90deg,#f59f00,#ffe066)}
.qb-fx{position:absolute;inset:0;pointer-events:none}
.qb-pop{position:absolute;font:800 1.6rem var(--sans);color:#fff;text-shadow:0 2px 0 #c92a2a,0 0 6px rgba(0,0,0,.35);animation:floatup 1.1s ease-out forwards}
.qb-pop.foe{right:22%;top:28%}.qb-pop.hero{left:16%;bottom:42%}
.qb-pop.crit{font-size:2.2rem;color:#ffe066;text-shadow:0 2px 0 #e8590c,0 0 8px rgba(0,0,0,.4)}
.qb-pop.heal{color:#d3f9d8;text-shadow:0 2px 0 #2b8a3e}
.qb-pop.ink{color:#d0bfff;text-shadow:0 2px 0 #3b2a6b}
.qb-bottom{display:grid;grid-template-columns:1fr minmax(260px,46%);gap:10px;background:#fffdf6;border-top:3px solid #3a2f4a;padding:10px 12px;min-height:128px}
.qb-log{font-size:.86rem;line-height:1.35;overflow:hidden}.qb-log p{margin:0 0 3px}
.qb-log p.emp{color:#8445a3;font-weight:700}.qb-log p.bad{color:#b42318;font-weight:700}
.qb-menu{display:grid;grid-template-columns:1fr 1fr;gap:6px;align-content:start;max-height:150px;overflow:auto}
.qb-menu button{border:2px solid #3a2f4a;background:#fff;border-radius:10px;padding:8px 10px;font:700 .9rem var(--sans);cursor:pointer;text-align:left;color:var(--ink);box-shadow:0 3px 0 #3a2f4a}
.qb-menu button:hover:not(:disabled){background:#fff6d6}
.qb-menu button:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px 0 #3a2f4a}
.qb-menu button:disabled{opacity:.45;cursor:default}
.qb-menu .qb-ab{grid-column:1/-1;padding:5px 10px}.qb-ab b{display:block;font-size:.85rem}.qb-ab small{display:block;font-size:.7rem;font-weight:500;color:var(--muted)}
.qb-menu .qb-back,.qb-menu .qb-cont{grid-column:1/-1;text-align:center}
.qb-menu .qb-cont{background:var(--accent);color:var(--on-accent)}
/* side panel */
.q-side{display:grid;gap:10px;position:sticky;top:16px}
.qs-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:10px 12px;box-shadow:var(--shadow)}
.qs-card h4{margin:0 0 6px;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
#qs-hero{display:grid;grid-template-columns:56px 1fr;gap:10px;align-items:center}
#qs-hero b{font:700 1.1rem var(--serif)}#qs-hero small{display:block;font-size:.75rem;color:var(--muted)}
.qs-art svg{width:56px;height:auto;display:block}
.qs-row{display:grid;grid-template-columns:28px 1fr 56px;gap:6px;align-items:center;font-size:.8rem;font-weight:700}
.qs-row small{text-align:right;color:var(--muted)}
.qs-stats{display:flex;justify-content:space-between;margin-top:6px;font-weight:700;font-size:.9rem}
.qs-stats span{display:inline-flex;align-items:center;gap:4px}
.qs-glow{margin-top:6px;font-size:.75rem;background:#fff6d6;border:1px solid #f0d27a;border-radius:8px;padding:4px 8px;color:#6b4c00}
.qs-quest p{margin:0;font-size:.88rem}
.qs-slot{display:grid;grid-template-columns:58px 1fr;gap:6px;align-items:center;font-size:.75rem;text-transform:capitalize;color:var(--muted);margin-bottom:4px}
.qs-slot select{font:inherit;font-size:.82rem;text-transform:none;color:var(--ink);padding:3px 4px;border-radius:7px;border:1px solid var(--line);background:var(--paper)}
.qs-item{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;margin-bottom:4px}
.qs-ab{font-size:.82rem;margin-bottom:2px}.qs-ab small{color:var(--muted)}.qs-ab.locked{opacity:.45}
.qs-foot{display:flex;align-items:center;gap:10px}
.q-guest{color:#4a3600;background:#fff6d6;border:1px solid #f0d27a;border-radius:10px;padding:8px 12px;margin-top:10px}.q-guest a{color:#7a3e00;font-weight:700}
@media (max-width:1000px){.qq{grid-template-columns:1fr}.q-side{position:static;grid-template-columns:1fr 1fr}.q-top{flex-direction:column;align-items:start}.q-help{text-align:left}}
@media (max-width:640px){.q-stage{aspect-ratio:auto;height:auto}.qb-bottom{grid-template-columns:1fr}.q-side{grid-template-columns:1fr}}
.q-battle:not([hidden])~.q-modal{place-items:end end;padding-right:3%;background:rgba(42,34,51,.25);padding-bottom:3%}
.q-battle:not([hidden])~.q-modal .q-card{width:min(520px,100%)}
.q-learn{display:inline-block;margin:-4px 0 10px;font-size:.8rem;font-weight:600;color:var(--accent)}

/* dark-theme contrast fixes for panels with fixed light backgrounds */
.urow.ready,.gup.ready{color:#2b2140}
.urow.ready small,.urow.ready .muted,.gup.ready small,.gup.ready .muted{color:#5f5440}
@media (prefers-color-scheme:dark){.up-hint a,.u-info .m{color:#c9a8f0}}
.urow.ready .u-info .m{color:#7a3c98}
/* Quillquest mentors, skill points and ranks */
.q-mentor{width:min(600px,100%)}
.q-mhead{display:flex;gap:12px;align-items:center;margin-bottom:8px}
.q-mhead b{font:700 1.15rem var(--serif)}.q-mhead small{display:block;color:var(--muted);font-size:.8rem}
.q-mart svg{width:58px;height:auto;display:block}
.q-mab{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:12px;background:var(--paper);margin-bottom:8px}
.q-mab small{display:block;font-size:.78rem;color:var(--muted)}
.q-mab .q-mstatus{color:#6741b0;font-weight:600;margin-top:2px}
.q-lesson{font-size:1.05rem;line-height:1.55;min-height:4.5em;margin:4px 0 8px}.q-lesson p{margin:0}
.q-dots{display:flex;gap:6px;justify-content:center;margin:6px 0 10px}.q-dots i{width:8px;height:8px;border-radius:50%;background:var(--line)}.q-dots i.on{background:var(--accent)}
.q-card .btn:disabled{opacity:.55;cursor:default}
.qs-card h4{display:flex;justify-content:space-between;align-items:center}
.qs-sp{font-size:.78rem;letter-spacing:0;text-transform:none;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:99px;padding:1px 8px}
.qs-ab{display:flex;justify-content:space-between;align-items:center;gap:6px;padding:3px 0;border-bottom:1px dashed var(--line)}
.qs-ab:last-child{border-bottom:0}
.qs-ab small{display:block}
.qs-ab.locked{opacity:1}.qs-ab.locked b{color:var(--muted)}
.qs-rank{font:800 .66rem var(--sans);background:#6741b0;color:#fff;border-radius:6px;padding:0 5px;vertical-align:1px}
.qs-max{font-size:.7rem;color:var(--muted)}
.mini-btn:disabled{opacity:.5;cursor:default}
/* Quillquest keyboard focus + key legend */
.q-help{display:flex;flex-wrap:wrap;gap:4px 14px;justify-content:flex-end;max-width:640px}
.q-help span{white-space:nowrap}
.qb-menu button:focus{outline:none}
.qb-menu button:focus-visible,.qb-menu button:focus{background:#fff3bf;box-shadow:0 0 0 3px #f59f00,0 3px 0 #3a2f4a;position:relative}
.qb-menu button:focus::before{content:"▸";position:absolute;left:-2px;top:50%;transform:translate(-100%,-50%);color:#f08c00;font-weight:900}
.q-stage .btn:focus-visible,.q-stage .mini-btn:focus-visible,.q-stage .cost-btn:focus-visible,.q-stage a:focus-visible{outline:3px solid #f59f00;outline-offset:2px}
.qb-menu{padding-left:12px}
/* Quillquest timer states */
.q-timer.low i{background:linear-gradient(90deg,#e8590c,#ff922b)}
.q-timer.paused i{background:repeating-linear-gradient(45deg,#74c0fc 0 8px,#a5d8ff 8px 16px)}
.q-timer.paused span{color:#0b3d66}
.q-timer.late{height:22px;background:#ffe3e3;border:2px solid #c92a2a;animation:qlate 1.2s ease-in-out infinite}
.q-timer.late i{background:repeating-linear-gradient(45deg,#ffc9c9 0 10px,#ffa8a8 10px 20px)}
.q-timer.late span{font-size:.78rem;line-height:18px;color:#7d1414;font-weight:800}
@keyframes qlate{50%{box-shadow:0 0 0 3px rgba(201,42,42,.25)}}
.q-late-note{margin:-4px 0 10px;font-size:.85rem;font-weight:600;color:#8a2a00;background:#fff4e6;border:1px solid #f0b46a;border-radius:8px;padding:5px 9px}
.q-learn-note{color:var(--muted);font-size:.75rem}
.qs-unknown b{color:var(--muted);letter-spacing:.02em}
.qb-pop.critword{right:auto;left:50%;top:12%;transform:translateX(-50%);font-size:3rem;letter-spacing:.04em;color:#ffd43b;text-shadow:0 3px 0 #c92a2a,0 0 14px rgba(0,0,0,.5);animation:critpop 1.1s ease-out forwards}
@keyframes critpop{0%{transform:translateX(-50%) scale(.4);opacity:0}25%{transform:translateX(-50%) scale(1.25);opacity:1}100%{transform:translateX(-50%) translateY(-30px) scale(1);opacity:0}}
/* error pages */
.err-page{max-width:560px;margin:56px auto;text-align:center;padding:30px;background:var(--card);border:1px solid var(--line);border-radius:16px}
.err-mark{font:800 4rem/1 var(--sans,system-ui);color:var(--accent);letter-spacing:.05em}
.err-page p{color:var(--muted)}.err-links{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}