:root {
  --bg: #f4f3ee; --panel: #fff; --ink: #241c16; --muted: #5d5248; --line: #d6d0c4; --soft: #ebe7de;
  --accent: #a3421c; --accent-ink: #fff; --grass: #44612a; --mark: #241c16; --mark-ink: #fff;
  --good: #2f6b2a; --bad: #a3271c; --info: #e9eef3; --info-line: #9fb3c8;
  --h1: #3b2a1e; --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --num: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #17130f; --panel: #211b16; --ink: #eee6dc; --muted: #b9ad9f; --line: #3d342b; --soft: #2a231d;
    --accent: #e27c4e; --accent-ink: #1b120c; --grass: #9cbf6b; --mark: #eee6dc; --mark-ink: #17130f;
    --good: #8fd081; --bad: #ff8a7a; --info: #1f2a33; --info-line: #3f5a73; --h1: #f3e3d3; }
}
* { 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(--font); }
a { color: var(--accent); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 8px; top: 8px; background: var(--panel); padding: 8px 12px; z-index: 9; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.top { background: var(--panel); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: -0.01em; }
.top nav { display: flex; gap: 4px; }
.top nav a { color: var(--ink); text-decoration: none; padding: 10px 12px; border-radius: 6px; font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; }
.top nav a[aria-current="page"] { background: var(--soft); box-shadow: inset 0 -3px 0 var(--accent); }
.horizon { height: 6px; background: linear-gradient(90deg, #44612a 0 12%, #6b4a32 12% 40%, #a3421c 40% 78%, #c9a26b 78%); }

.hero { padding: 22px 0 6px; max-width: 760px; }
h1 { font-size: clamp(1.6rem, 4.6vw, 2.35rem); line-height: 1.12; margin: 0 0 8px; color: var(--h1); letter-spacing: -0.02em; }
.lede { margin: 0; color: var(--muted); font-size: 1.05rem; }
h2 { font-size: 1.35rem; line-height: 1.25; margin: 1.6em 0 0.5em; letter-spacing: -0.01em; }
h3 { font-size: 1.08rem; margin: 1.2em 0 0.4em; }

.note { padding: 10px 14px; border-left: 4px solid var(--line); background: var(--panel); margin: 10px 0; font-size: 0.95rem; }
.note.warn { border-color: var(--bad); }
#store-note.stuck { position: sticky; top: 0; z-index: 15; background: var(--panel); box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15); }
.note.info { border-color: var(--info-line); background: var(--info); }

.tool { margin: 14px 0 8px; }
.ftabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin: 0 0 10px; }
.ftabs button { font: inherit; font-weight: 700; padding: 8px 6px; min-height: 52px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); border-radius: 6px; cursor: pointer; line-height: 1.2; }
.ftabs button span { display: block; font-weight: 500; font-size: 0.82rem; color: var(--muted); }
.ftabs button[aria-selected="true"] { border-color: var(--ink); box-shadow: inset 0 -4px 0 var(--accent); }

.summary { margin: 0 0 12px; }
.sum-line { display: flex; flex-wrap: wrap; gap: 4px 14px; padding: 10px 14px; background: var(--mark); color: var(--mark-ink); border-radius: 6px; text-decoration: none; font-family: var(--num); font-size: 0.95rem; }
.sum-line b { font-family: var(--font); }
.sum-empty { margin: 0; padding: 10px 14px; background: var(--soft); border-radius: 6px; color: var(--muted); }

.kb { display: grid; gap: 18px; }
@media (min-width: 900px) {
  .kb { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); align-items: start; }
  .summary { display: none; }
}
fieldset { border: 0; border-top: 1px solid var(--line); margin: 0; padding: 10px 0 8px; min-width: 0; }
legend { font-weight: 800; padding: 0 6px 0 0; font-size: 0.98rem; }
label { display: block; font-size: 0.92rem; font-weight: 600; color: var(--ink); }
input:not([type=checkbox]):not([type=radio]), select { display: block; width: 100%; margin-top: 4px; font: inherit; font-size: 16px; padding: 9px 10px; min-height: 44px;
  border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--ink); }
input[type=checkbox], input[type=radio] { width: 20px; height: 20px; accent-color: var(--accent); margin: 0; flex: none; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 8px; }
.row4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 480px) { .row4 { grid-template-columns: 1fr 1fr; } }
.lone { max-width: 50%; min-width: 220px; }
.check { display: flex; align-items: center; gap: 10px; min-height: 44px; font-weight: 500; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 0 12px; }
details.tex { margin: 2px 0 6px; font-size: 0.92rem; }
details.tex summary { cursor: pointer; color: var(--accent); padding: 6px 0; }
details.tex table { border-collapse: collapse; margin-top: 6px; }
details.tex th, details.tex td { text-align: left; padding: 3px 10px 3px 0; vertical-align: top; }

.kb-key { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 6px 16px 14px; }
.key-h { margin: 10px 0 2px; font-size: 1.3rem; }
.ref { margin: 0 0 6px; color: var(--muted); font-size: 0.92rem; }
.kb-key h3 { margin: 14px 0 4px; font-size: 0.95rem; color: var(--grass); }
.kl { margin: 0; }
.kr { display: grid; grid-template-columns: 9.5em 1fr; gap: 2px 12px; padding: 7px 0; border-top: 1px solid var(--soft); }
.kr dt { font-weight: 600; font-size: 0.92rem; color: var(--muted); }
.kr dd { margin: 0; }
.kr dd b { font-size: 1.02rem; }
.kr ul { margin: 2px 0 0; padding-left: 1.1em; font-size: 0.9rem; color: var(--muted); }
.kr[data-k="cls"] dd b { font-size: 1.35rem; color: var(--accent); }
@media (max-width: 420px) { .kr { grid-template-columns: 1fr; } }
.empty { color: var(--muted); }

.actions { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.cname { max-width: 420px; }
.btns { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.btn { font: inherit; font-weight: 700; font-size: 0.98rem; padding: 10px 16px; min-height: 44px; border-radius: 6px; border: 1px solid var(--ink); background: var(--panel); color: var(--ink); cursor: pointer; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn:disabled { opacity: 0.5; cursor: default; }
.link { font: inherit; background: none; border: 0; color: var(--accent); text-decoration: underline; cursor: pointer; padding: 10px 4px; min-height: 44px; }
.quiet-btns { gap: 14px; margin-top: 0; }
.share-out { max-width: 640px; }
.copies { margin: 6px 0; font-size: 0.95rem; }
.copies summary { cursor: pointer; padding: 11px 0; color: var(--muted); }
.copies ul { list-style: none; padding: 0; margin: 0; }
.copies li { display: flex; justify-content: space-between; align-items: center; gap: 10px; border-top: 1px solid var(--soft); }
.copies small, .hint { color: var(--muted); font-size: 0.88rem; }

.toast { position: fixed; left: 50%; top: 10px; transform: translate(-50%, -200%); background: var(--mark); color: var(--mark-ink); padding: 10px 16px; border-radius: 6px;
  max-width: min(360px, calc(100% - 32px)); transition: transform 0.2s; z-index: 20; font-size: 0.92rem; pointer-events: none; box-shadow: 0 2px 10px rgba(0,0,0,.25); }
.toast.on { transform: translate(-50%, 0); }
@media (prefers-reduced-motion: reduce) { .toast { transition: none; } }

/* Practice */
.facts-card { background: var(--panel); border: 1px solid var(--line); border-left: 6px solid var(--accent); border-radius: 8px; padding: 6px 16px 10px; margin-bottom: 14px; }
.facts-card h2 { margin: 8px 0 4px; font-size: 1.25rem; }
.facts-card dl { margin: 0; display: grid; grid-template-columns: 9em 1fr; gap: 4px 12px; }
.facts-card dt { color: var(--muted); font-weight: 600; font-size: 0.92rem; }
.facts-card dd { margin: 0; }
@media (max-width: 420px) { .facts-card dl { grid-template-columns: 1fr; } .facts-card dt { margin-top: 6px; } }
.bub { border: 0; border-top: 1px solid var(--line); padding: 10px 0 6px; }
.bub legend { font-weight: 800; }
.bub legend small { font-weight: 500; color: var(--muted); }
.bub-opts { display: grid; grid-template-columns: repeat(auto-fill, minmax(165px, 1fr)); gap: 2px 10px; margin-top: 6px; }
.opt { display: flex; align-items: center; gap: 10px; min-height: 44px; font-weight: 500; cursor: pointer; border-radius: 6px; padding: 2px 6px 2px 2px; }
.opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.opt .n { flex: none; width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--ink); display: grid; place-items: center; font-family: var(--num); font-weight: 700; font-size: 0.95rem; }
.opt input:checked + .n { background: var(--mark); color: var(--mark-ink); }
.opt input:focus-visible + .n { outline: 3px solid var(--accent); outline-offset: 2px; }
.opt.good .n { border-color: var(--good); box-shadow: 0 0 0 3px var(--good); }
.opt.miss .n { border-color: var(--good); border-style: dashed; box-shadow: 0 0 0 3px var(--good); }
.opt.bad .n { border-color: var(--bad); box-shadow: 0 0 0 3px var(--bad); }
.opt.good .t::after { content: " (right)"; color: var(--good); font-size: 0.85rem; }
.opt.miss .t::after { content: " (answer)"; color: var(--good); font-size: 0.85rem; }
.opt.bad .t::after { content: " (wrong)"; color: var(--bad); font-size: 0.85rem; }
.practice-card h3 { margin: 18px 0 0; color: var(--grass); }
.score { background: var(--mark); color: var(--mark-ink); border-radius: 8px; padding: 12px 16px; margin: 16px 0; }
.score b { font-size: 1.6rem; font-family: var(--num); }
.score p { margin: 4px 0 0; }
.misses { list-style: none; padding: 0; margin: 10px 0; }
.misses li { border-top: 1px solid var(--line); padding: 8px 0; }
.misses li b { display: block; }
.misses .why { display: block; color: var(--muted); font-size: 0.92rem; margin-top: 2px; }
.pr-opts { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.history { font-size: 0.95rem; }
.history table { border-collapse: collapse; }
.history td, .history th { padding: 4px 12px 4px 0; text-align: left; border-top: 1px solid var(--soft); }

/* Grader */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 4px 16px 14px; margin: 0 0 16px; }
.panel h2 { margin: 12px 0 6px; font-size: 1.2rem; }
.pts { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
.pts label { font-size: 0.85rem; }
.grid-wrap { container-type: inline-size; }
.mgrid { width: 100%; border-collapse: collapse; }
.mgrid th { font-size: 0.8rem; color: var(--muted); font-weight: 700; text-align: left; padding: 4px 2px; }
.mgrid td { padding: 2px; }
.mgrid input { min-width: 0; padding: 8px 2px; text-align: center; font-family: var(--num); }
.mgrid td.wide input { min-width: 5.6em; }
.mgrid input.err { border-color: var(--bad); box-shadow: 0 0 0 2px var(--bad); }
.mgrid input.wrongc { background: color-mix(in srgb, var(--bad) 14%, var(--panel)); }
.mgrid .fl { font-weight: 800; white-space: nowrap; padding-right: 6px; }
.mgrid .tot { font-family: var(--num); font-weight: 700; text-align: right; white-space: nowrap; }
@container (max-width: 760px) {
  .mgrid thead { display: none; }
  .mgrid, .mgrid tbody, .mgrid tr, .mgrid td { display: block; }
  .mgrid tr { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px 8px; border-top: 2px solid var(--line); padding: 8px 0; }
  .mgrid td.fl, .mgrid td.tot { grid-column: 1 / -1; }
  .mgrid td.wide input { min-width: 0; }
  .mgrid td[data-l]::before { content: attr(data-l); display: block; font-size: 0.78rem; color: var(--muted); font-weight: 700; }
}
.people { list-style: none; padding: 0; margin: 8px 0; display: flex; flex-wrap: wrap; gap: 6px; }
.people button { font: inherit; padding: 8px 12px; min-height: 44px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); border-radius: 6px; cursor: pointer; }
.people button[aria-current="true"] { border-color: var(--ink); box-shadow: inset 0 -3px 0 var(--accent); font-weight: 700; }
.person-head { display: grid; grid-template-columns: 2fr 1.5fr; gap: 10px; max-width: 640px; }
.results table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.results th, .results td { text-align: left; padding: 6px 8px 6px 0; border-top: 1px solid var(--soft); vertical-align: top; }
.results td.n, .results th.n { text-align: right; font-family: var(--num); }
.results .dropped { text-decoration: line-through; color: var(--muted); }
.results .tb { font-size: 0.85rem; color: var(--muted); }
.tbl-scroll { overflow-x: auto; }
.results .mem { white-space: nowrap; }
.tb-row { display: none; }
@media screen and (max-width: 560px) {
  .results .tbcol { display: none; }
  .results .tb-row { display: table-row; }
  .results .tb-row td { border-top: 0; padding: 0 0 6px 3.2em; }
}
.badge { display: inline-block; font-size: 0.78rem; font-weight: 700; padding: 1px 6px; border-radius: 4px; background: var(--soft); color: var(--muted); }

.content { max-width: 760px; padding-bottom: 20px; }
.caveat { font-weight: 600; border-left: 4px solid var(--grass); padding-left: 12px; margin-top: 28px; }
.faq details { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 700; padding: 12px 0; min-height: 44px; }
.faq details p { margin: 0 0 14px; }
.sources { font-size: 0.92rem; color: var(--muted); }

footer { border-top: 1px solid var(--line); background: var(--panel); padding: 18px 0 26px; margin-top: 24px; font-size: 0.9rem; color: var(--muted); }
.indep { margin: 0 0 10px; }
.sb-footer p { margin: 6px 0; }
.sb-more { line-height: 1.9; }
.sb-footer a { color: var(--muted); }
.sb-credit a { color: var(--accent); }

.print-root { display: none; }

@media print {
  @page { margin: 0.45in; }
  body { background: #fff; color: #000; font-size: 10pt; }
  body > *:not(.print-root) { display: none !important; }
  .print-root { display: block !important; }
  .sheet { break-after: page; }
  .sheet:last-child { break-after: auto; }
  .ps-head h2 { font-size: 15pt; margin: 0 0 2pt; }
  .ps-head p { margin: 0 0 6pt; font-size: 9.5pt; }
  .ps-lines { display: flex; gap: 14pt; }
  .ps-lines span { flex: 1; border-bottom: 1px solid #000; padding-top: 10pt; font-size: 8.5pt; }
  .ps-lines span:first-child { flex: 2; }
  .ps-foot { font-size: 8.5pt; margin-top: 6pt; }
  .cs-part { font-size: 11pt; margin: 8pt 0 3pt; border-bottom: 1.5px solid #000; padding-bottom: 1pt; }
  .cs-part small { font-weight: normal; font-size: 8.5pt; }
  .cs-cols { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 12pt; }
  .cs-cols.cs-two { grid-template-columns: 1.3fr 1fr; }
  .cs-block { margin-bottom: 5pt; break-inside: avoid; }
  .cs-h, .cs-r { display: grid; grid-template-columns: 1fr repeat(4, 15pt); gap: 2pt; align-items: center; }
  .cs-h { font-weight: 700; font-size: 8.5pt; border-bottom: 0.75px solid #000; padding-bottom: 1pt; margin-bottom: 1pt; }
  .cs-f { text-align: center; }
  .cs-r { font-size: 8.3pt; line-height: 1; padding: 1.3pt 0; }
  .cs-r > span:first-child { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .cs-b { width: 12pt; height: 12pt; border: 0.9px solid #000; border-radius: 50%; display: grid; place-items: center; font-size: 6.5pt; margin: 0 auto; }
  .cs-b.on { background: #000; color: #fff; -webkit-print-color-adjust: exact; print-color-adjust: exact; font-weight: 700; }
  .site-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14pt; margin-top: 8pt; }
  .site-card { border: 1.5px solid #000; padding: 8pt 12pt; break-inside: avoid; min-height: 4.1in; font-size: 11pt; }
  .site-card h3 { margin: 0 0 8pt; font-size: 15pt; }
  .site-card p { margin: 0 0 8pt; }
  .site-card ul { list-style: none; margin: 0; padding: 0; }
  .site-card li { display: flex; align-items: center; gap: 6pt; margin-bottom: 3pt; }
  .tick { width: 10pt; height: 10pt; border: 1px solid #000; display: inline-block; flex: none; }
  .tick.on { background: #000; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .blank { display: inline-block; min-width: 40pt; border-bottom: 1px solid #000; }
  .kd { break-inside: avoid; margin: 0 0 10pt; }
  .kd h3 { margin: 6pt 0 1pt; font-size: 11.5pt; }
  .kd .facts { margin: 0 0 3pt; font-size: 9pt; }
  .kd table, .pt-table { width: 100%; border-collapse: collapse; }
  .kd th, .kd td { text-align: left; vertical-align: top; padding: 1.5pt 6pt 1.5pt 0; border-top: 0.5px solid #999; font-size: 9pt; }
  .kd th { width: 1.3in; }
  .kd .why { color: #333; font-size: 8.5pt; }
  .pt-table th, .pt-table td { text-align: left; padding: 2pt 6pt 2pt 0; border-bottom: 0.5px solid #999; font-size: 9.5pt; vertical-align: top; }
  .pt-table td.n, .pt-table th.n { text-align: right; }
  .pt-table thead { display: table-header-group; }
  .pt-table tr { break-inside: avoid; }
  .pt-table .dropped { text-decoration: line-through; }
  .facts-print dl { display: grid; grid-template-columns: 1.5in 1fr; gap: 0 8pt; margin: 0 0 5pt; font-size: 9.5pt; line-height: 1.3; }
  .facts-print dt { font-weight: 700; }
  .facts-print dd { margin: 0; }
  .facts-print h3 { margin: 4pt 0 2pt; font-size: 11.5pt; }
  .facts-print .fp { break-inside: avoid; border-top: 1px solid #000; padding-top: 3pt; }
}
.crumbs { margin: 14px 0 0; font-size: 0.9rem; color: var(--muted); }
.file-btn { display: inline-flex; align-items: center; }
.person-total { font-weight: 800; font-family: var(--num); margin: 8px 0 0; }
.pts-d summary, .pp summary { cursor: pointer; padding: 11px 0; }
.pp { margin-top: 4px; }