:root {
  --bg: #eef2f7;
  --paper: #ffffff;
  --ink: #111c2d;
  --muted: #4f5c6e;
  --line: #d3dbe6;
  --accent: #1c4f9c;
  --accent-ink: #ffffff;
  --accent-soft: #dfe8f6;
  --ball: #f5c518;
  --ball-soft: #fdf3c8;
  --focus: #b4580a;
  --good: #1b6b3a;
  --good-soft: #e1f2e6;
  --bad: #b3261e;
  --bad-soft: #fbe6e4;
  --pen: #c0262d;
  --sheet-ink: #2a3442;
  --sheet-line: #7d8794;
  --sheet-muted: #8a93a0;
  --radius: 4px;
  --head: Bahnschrift, "DIN Alternate", "D-DIN", "Barlow Semi Condensed", "Roboto Condensed", "Arial Narrow", sans-serif;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Arial, sans-serif;
  --narrow: "Arial Narrow", "Roboto Condensed", "Liberation Sans Narrow", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1726; --paper: #16223a; --ink: #e9eef6; --muted: #aab6c8; --line: #2b3a55; --accent: #8db4f2; --accent-ink: #0e1726;
    --accent-soft: #1f3150; --ball: #f5c518; --ball-soft: #3a3214; --focus: #ffb36b; --good: #8fd6a6; --good-soft: #15301f; --bad: #ff9b91; --bad-soft: #3b1b19;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1726; --paper: #16223a; --ink: #e9eef6; --muted: #aab6c8; --line: #2b3a55; --accent: #8db4f2; --accent-ink: #0e1726;
  --accent-soft: #1f3150; --ball: #f5c518; --ball-soft: #3a3214; --focus: #ffb36b; --good: #8fd6a6; --good-soft: #15301f; --bad: #ff9b91; --bad-soft: #3b1b19;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 var(--body); }
a { color: var(--accent); text-underline-offset: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--paper); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }
h1, h2, h3 { font-family: var(--head); line-height: 1.12; font-weight: 700; }
h1 { font-size: clamp(1.9rem, 4.4vw, 2.7rem); margin: 0 0 6px; letter-spacing: -0.005em; }
h2 { font-size: 1.45rem; margin: 1.6em 0 0.45em; }
h3 { font-size: 1.12rem; margin: 1.1em 0 0.3em; }
p { margin: 0 0 0.8em; }

/* hero */
.hero { padding: 18px 0 8px; border-bottom: 4px solid var(--ball); margin-bottom: 14px; }
.fmt-switch { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 12px; font-size: 0.95rem; }
.fmt-switch b, .fmt-switch a { padding: 6px 12px; border: 1px solid var(--line); border-radius: var(--radius); min-height: 44px; display: inline-flex; align-items: center; }
.fmt-switch b { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.fmt-switch a { background: var(--paper); text-decoration: none; }
.lede { font-size: 1.08rem; max-width: 62ch; margin: 0; color: var(--ink); }

/* setup */
.setup { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; margin: 4px 0 12px; }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--accent); border-radius: var(--radius); overflow: hidden; }
.seg button { font: inherit; font-size: 0.98rem; padding: 0 14px; min-height: 44px; border: 0; border-right: 1px solid var(--line); background: var(--paper); color: var(--ink); cursor: pointer; }
.seg button:last-child { border-right: 0; }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); font-weight: 700; }
.sr-opt { display: inline-flex; flex-wrap: wrap; max-width: 100%; gap: 8px; align-items: center; font-size: 0.95rem; color: var(--muted); }
select, input { font: inherit; font-size: 16px; color: var(--ink); background: var(--paper); border: 1px solid var(--sheet-line); border-radius: var(--radius); min-height: 44px; padding: 6px 10px; }
select { max-width: 100%; }
.setrow { display: flex; align-items: center; gap: 12px; }
.setcode { margin: 0; color: var(--muted); }
.setcode b { color: var(--ink); font-family: var(--head); font-size: 1.15rem; letter-spacing: 0.08em; }
.btn { font: inherit; font-size: 0.98rem; font-weight: 600; min-height: 44px; padding: 0 16px; border-radius: var(--radius); border: 1px solid var(--accent); background: var(--paper); color: var(--accent); cursor: pointer; }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
a.btn { display: inline-flex; align-items: center; text-decoration: none; margin: 4px 6px 4px 0; }
.btn.small { min-height: 44px; padding: 0 12px; font-size: 0.92rem; }
.link { font: inherit; background: none; border: 0; padding: 10px 4px; color: var(--accent); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; min-height: 44px; }
.note { overflow-wrap: anywhere; padding: 10px 12px; border: 1px solid var(--bad); background: var(--bad-soft); border-radius: var(--radius); }
.note.info { border-color: var(--accent); background: var(--accent-soft); }
.hint { font-size: 0.92rem; color: var(--muted); }

/* work area */
.work { display: grid; gap: 8px 28px; outline: none; }
.work > * { min-width: 0; }
.story { overflow-wrap: anywhere; }
@media (min-width: 980px) { .work { grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr); align-items: start; } }
.panel-h { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
.panel-h h2 { margin: 0.3em 0 0.2em; }
.sline { margin: 0; font-size: 0.9rem; color: var(--muted); }
.story { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; font-size: 0.97rem; line-height: 1.4; }
.story .intro { font-weight: 600; }
.story .sset + .sset { margin-top: 18px; padding-top: 12px; border-top: 2px solid var(--line); }
.story .shead { margin: 0 0 4px; font-size: 1.12rem; }
.story .info, .story .lineup { margin: 0 0 6px; }
.story .lineup { padding-left: 10px; border-left: 3px solid var(--accent); }
.story .rl { margin-top: 8px; }
.story .rl p { margin: 0; padding: 2px 0; break-inside: avoid; }
.story .r .rn { display: inline-block; min-width: 2.2em; color: var(--muted); font-variant-numeric: tabular-nums; font-weight: 600; }
.story .ev { margin: 3px 0; padding: 2px 8px 2px 10px; background: var(--ball-soft); border-left: 3px solid var(--ball); }
.story .end { font-weight: 700; margin-top: 6px; }
@media (min-width: 620px) and (max-width: 979px) { .story .rl.cols { columns: 2; column-gap: 24px; } }
.blank-d { margin: 0 0 10px; }
.blank-d > summary, .keysec summary, .recent > summary, .conv > summary { cursor: pointer; font-weight: 600; color: var(--accent); min-height: 44px; display: flex; align-items: center; }

/* questions */
.qs-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
.qs-head h2 { margin: 0.3em 0 0.2em; }
.score { margin: 0; color: var(--muted); font-weight: 600; }
.qlist { list-style: none; padding: 0; margin: 0; counter-reset: q; }
.q { counter-increment: q; padding: 12px 0 12px 40px; border-top: 1px solid var(--line); position: relative; }
.q::before { content: counter(q); position: absolute; left: 0; top: 12px; width: 28px; height: 28px; border-radius: 50%; background: var(--ball); color: #1d1a08; font: 700 0.95rem/28px var(--head); text-align: center; }
.q .prompt { margin: 0 0 8px; font-weight: 600; }
.arow { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; }
.arow input.ans { flex: 1 1 200px; min-width: 0; }
.opts { display: grid; gap: 6px; flex: 1 1 100%; }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); cursor: pointer; min-height: 44px; }
.opt input { min-height: 0; width: 20px; height: 20px; margin: 2px 0 0; flex: none; }
.q.is-right .ans, .q.is-right .opt:has(input:checked) { border-color: var(--good); background: var(--good-soft); }
.q.is-wrong .ans, .q.is-wrong .opt:has(input:checked) { border-color: var(--bad); background: var(--bad-soft); }
.fb { margin: 6px 0 0; font-size: 0.95rem; }
.fb.right { color: var(--good); }
.fb.wrong, .fb.unread { color: var(--bad); }
.fb.close { color: var(--focus); }
.q .ans-d { margin-top: 6px; }
.q .ans-d > summary { cursor: pointer; color: var(--accent); font-size: 0.95rem; min-height: 44px; display: flex; align-items: center; }
.kans { margin: 2px 0; }
.steps { margin: 4px 0 0; padding-left: 1.2em; font-size: 0.95rem; }
.qs-foot { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding-top: 12px; border-top: 1px solid var(--line); }
.ask { font-size: 0.95rem; }

/* sheets */
.keysec h2 { margin-top: 1.4em; }
.setsheet { margin: 10px 0 18px; }
.setsheet .panels { display: grid; gap: 12px; }
.setsheet.int .panels:not(.trk) { grid-template-columns: repeat(auto-fit, minmax(min(330px, 100%), 1fr)); }
.setsheet .panels.trk { grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); }
.panel { margin: 0; }
.setsheet .panels > * { min-width: 0; }
.panel figcaption, .trk-title { font-weight: 600; font-size: 0.92rem; color: var(--muted); margin: 0 0 4px; }
.figview { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 4px; }
.setsheet.hs .panel .figview { overflow-x: auto; }
.setsheet.hs .panel .figview .sheet { min-width: 620px; }
.scroll-cue { display: none; margin: 4px 0 0; font-size: 0.9rem; font-weight: 600; color: var(--accent); }
/* the NFHS drawing is 620px at least: below about 662px of screen it scrolls inside its box, so say so */
@media (max-width: 661px) { .setsheet.hs .scroll-cue { display: block; } }
.result { font-weight: 700; margin: 8px 0 0; }
.sheet-text { margin: 8px 0 0; font-size: 0.95rem; }
.sheet-text > summary { cursor: pointer; color: var(--accent); min-height: 44px; display: flex; align-items: center; }
.sheet-text .st-name { font-weight: 700; margin: 6px 0 2px; }
.sheet-text ul { margin: 0 0 6px; padding-left: 1.2em; }
.sheet { width: 100%; height: auto; display: block; background: #fff; }
.sheet text { font-family: var(--narrow); fill: var(--sheet-ink); }
.sheet .ln { fill: none; stroke: var(--sheet-line); stroke-width: 0.8; }
.sheet .ln.thin { stroke-width: 0.5; }
.sheet .ln.head { fill: #eef2f7; }
.sheet .ln.band { fill: #f5f7fa; }
.sheet .nofill { fill: none; }
.sheet .num, .sheet .tiny { fill: var(--sheet-muted); }
.sheet .lbl { fill: #4a5563; font-weight: 600; }
.sheet .roman { font-weight: 700; fill: #24303f; }
.sheet text.pen { fill: var(--pen); font-weight: 700; }
.sheet .mk { stroke: var(--pen); stroke-width: 1.2; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.sheet .thinpen { stroke-width: 0.8; }
.sheet, .sheet * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }

/* share and history */
.share { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.print-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.print-row label { display: inline-flex; flex-wrap: wrap; max-width: 100%; gap: 8px; align-items: center; }
.share-out label { display: grid; gap: 4px; font-size: 0.92rem; color: var(--muted); }
.share-out input { width: 100%; }
.recent ul { list-style: none; padding: 0; margin: 6px 0; }
.recent li { display: flex; justify-content: space-between; gap: 10px; align-items: center; padding: 6px 0; border-top: 1px solid var(--line); }
.recent li small { display: block; color: var(--muted); }
.recent .code { font-family: var(--head); letter-spacing: 0.06em; }
.toast { position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%) translateY(140%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: var(--radius); max-width: calc(100% - 32px); transition: transform 0.2s; z-index: 30; }
.toast.on { transform: translateX(-50%) translateY(0); }
@media (prefers-reduced-motion: reduce) { .toast { transition: none; } }

/* content */
.content { max-width: 75ch; margin-top: 10px; }
.content .conv { margin: 6px 0 10px; }
.rules { padding-left: 1.3em; margin: 6px 0 10px; }
.rules li { margin: 0 0 6px; }
.rules .src { color: var(--muted); font-size: 0.88rem; }
.faq details { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; padding: 10px 0; min-height: 44px; }
.faq details p { margin: 0 0 10px; }
.sources { font-size: 0.92rem; color: var(--muted); margin-top: 18px; }

/* footer */
footer { margin-top: 36px; padding: 18px 0 30px; border-top: 1px solid var(--line); font-size: 0.92rem; color: var(--muted); }
.indep { margin-bottom: 10px; }
.sb-footer p { margin: 0 0 8px; }
.sb-more { line-height: 1.8; }
.sb-more a, .sb-credit a { color: var(--accent); }
.print-root { display: none; }

/* print: only the print root, built in app.js */
@page { size: auto; margin: 12mm; }
@page land { size: landscape; margin: 9mm; }
@media print {
  body { background: #fff; color: #000; font: 10.5pt/1.35 var(--body); }
  main, footer, .toast, .skip, .sheet-text, .scroll-cue { display: none !important; }
  .print-root { display: block; }
  .ph { border-bottom: 2px solid #000; margin-bottom: 6pt; }
  .ph h2 { margin: 0; font-size: 15pt; }
  .ph p { margin: 2pt 0 4pt; font-size: 9.5pt; }
  .pmeta { display: flex; gap: 18pt; font-size: 10pt; margin: 4pt 0 8pt; }
  .pstory .story { border: 0; padding: 0; font-size: 10pt; background: none; }
  .story .intro { font-weight: 700; }
  .story .shead { font-size: 12pt; margin: 8pt 0 2pt; break-after: avoid; }
  .story .info, .story .lineup { margin: 0 0 3pt; break-after: avoid; }
  .story .lineup { border-left: 2pt solid #000; padding-left: 5pt; }
  .story .rl.cols { columns: 3; column-gap: 14pt; column-rule: 0.5pt solid #bbb; }
  .story .rl p { padding: 0.5pt 0; }
  .story .r .rn { min-width: 2.1em; color: #000; }
  .story .ev { background: none; border-left: 2pt solid #777; padding: 0 0 0 4pt; margin: 1pt 0; font-weight: 600; }
  .story .sset + .sset { border-top: 1pt solid #000; margin-top: 8pt; padding-top: 4pt; }
  .pq { margin-top: 10pt; border-top: 1pt solid #000; padding-top: 4pt; }
  .pq h3, .prules h3 { font-size: 12pt; margin: 0 0 4pt; break-after: avoid; }
  .pq ol { padding-left: 22pt; margin: 0; }
  .pq li { margin: 0 0 9pt; break-inside: avoid; }
  .pq li p { margin: 0 0 2pt; }
  .pline { color: #333; }
  .popts { display: grid; gap: 2pt; }
  .prules { margin-top: 10pt; border-top: 1pt solid #000; padding-top: 4pt; }
  .prules .rules { font-size: 9pt; padding-left: 14pt; }
  .prules .rules li { margin: 0 0 2pt; break-inside: avoid; }
  .prules .src { color: #444; font-size: 8pt; }
  .psheet { page: land; break-before: page; }
  .psheet .setsheet { margin: 0; }
  .psheet .setsheet.hs { max-width: 250mm; }
  .psheet .figview { border: 0; padding: 0; border-radius: 0; }
  .psheet .panel figcaption, .psheet .trk-title { color: #000; font-size: 9pt; margin: 2pt 0; }
  .psheet .setsheet.int .panels:not(.trk) { display: grid; grid-template-columns: 1fr 1fr; gap: 8pt; }
  .psheet .setsheet .panels.trk { display: grid; grid-template-columns: 1fr 1fr; gap: 10pt; }
  .psheet .trk-wrap { break-inside: avoid; }
  .psheet .setsheet.hs .panels:not(.trk) { display: grid; gap: 6pt; }
  .psheet .setsheet.hs .panel .figview .sheet { min-width: 0; width: 100%; }
  .ptrk .trk-wrap { break-inside: avoid; margin: 0 0 6pt; }
  .ptrk .panels.trk { display: grid; grid-template-columns: 1fr 1fr; gap: 10pt; max-width: 190mm; }
  .ptrk .trk-title { font-size: 11pt; font-weight: 700; margin: 2pt 0 3pt; }
  .psheet .result { font-size: 10pt; margin: 4pt 0 0; }
  .pnote { font-size: 8.5pt; color: #333; margin: 4pt 0 0; }
  .pans { break-before: page; }
  .pans ol { padding-left: 22pt; margin: 0; }
  .pans li { margin: 0 0 6pt; break-inside: avoid; }
  .pans li p { margin: 0; }
  .pa { font-size: 9.5pt; }
  .sheet text.pen { fill: #c0262d; }
}
@media (max-width: 560px) {
  .seg { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
  .seg button { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .fmt-switch b, .fmt-switch a { padding: 6px 10px; }
}