:root{--bg:#faf6f0;--card:#fffdf9;--ink:#2b2620;--muted:#6b6157;--line:#e8e0d4;
--ok:#286b43;--ok-bg:#e5f1e9;--err:#b3261e;--err-bg:#f7e2df;--info:#1f5fa8;--info-bg:#e4edf8}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:90px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;overflow-wrap:break-word;accent-color:var(--info)}
a{color:var(--info)}
:focus-visible{outline:3px solid var(--info);outline-offset:2px}
[role=tab][aria-selected=true]:focus-visible,button.primary:focus-visible{outline-color:var(--ink)}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;z-index:9;background:var(--card);padding:6px 10px}
header.top{position:sticky;top:0;z-index:5;background:var(--card);border-bottom:1px solid var(--line)}
.bar{max-width:800px;margin:0 auto;padding:8px 20px;display:flex;align-items:center;gap:12px}
.brand{font-weight:700;color:var(--ink);text-decoration:none;white-space:nowrap}
@media (max-width:480px){.brand-x{display:none}}
#navToggle{margin-left:auto;display:none;white-space:nowrap;font-size:15px}
#navToggle::after{content:" ▾"}#navToggle[aria-expanded=true]::after{content:" ▴"}
#nav ol{list-style:none;margin:0 auto;padding:0 20px 8px;max-width:800px;display:flex;flex-wrap:wrap;gap:4px 16px;font-size:15px}
#nav a{text-decoration:none;padding:2px 0;border-bottom:2px solid transparent}
#nav a[aria-current]{border-bottom-color:var(--info);font-weight:600}
@media (max-width:840px){#navToggle{display:inline-block}#nav{display:none}#nav.open{display:block}#nav ol{flex-direction:column;gap:0}#nav a{display:block;padding:10px 0}#nav a[aria-current]{border-bottom-color:transparent;border-left:3px solid var(--info);padding-left:8px}}
main{max-width:800px;margin:0 auto;padding:8px 20px 40px}
h1{font-size:2rem;line-height:1.25;margin:32px 0 8px}
h2{font-size:1.3rem;line-height:1.3;margin:32px 0 8px}
h3{font-size:1.05rem;margin:0 0 4px}
h3+p{margin-top:0}
#siteSearch{margin-bottom:12px}
#searchOut{margin:0 0 12px}
#searchOut:empty{display:none}
.lead,.summary{font-size:1.08rem}
.summary{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--info);padding:12px 16px;border-radius:6px}
.muted,figcaption,.note{color:var(--muted)}
.note{font-size:.94rem}
.nw{white-space:nowrap}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px;margin:16px 0}
.card>:first-child{margin-top:0}.card>:last-child{margin-bottom:0}
.card label[for]{display:block}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.grid .card{margin:0}
.grid .card .badge{display:table;margin:4px 0}
dl.card dd{margin:0 0 8px}
figure{margin:20px 0;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:12px}
figure svg{display:block;width:100%;height:auto;max-width:520px;margin:0 auto}
figure svg.tall{display:none;max-width:360px}
@media (max-width:600px){figure svg.wide{display:none}figure svg.tall{display:block}}
#cycle{max-width:400px}
#pWidget figure{margin:8px 0}
#band{max-width:560px}
@media (max-width:600px){#bandSegs text{display:none}#band text{font-size:18px}}
figcaption{font-size:.94rem;margin-top:8px}
figcaption ol{margin:4px 0 0;padding-left:1.4em}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.95rem;background:var(--card)}
th,td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
th{background:var(--bg)}
td ul{margin:0;padding-left:1.2em}
table.stack td:empty{display:none}
@media (max-width:600px){table.stack thead{display:none}table.stack,table.stack tbody,table.stack tr,table.stack td{display:block;width:100%}
table.stack tr{border:1px solid var(--line);margin-bottom:10px}table.stack td{border:0;border-bottom:1px solid var(--line)}
table.stack td::before{content:attr(data-label);display:block;font-size:.8rem;color:var(--muted);font-weight:600}
table.stack td:first-child{background:var(--bg);font-weight:600}table.stack td:first-child::before{content:none}table.stack td:last-child{border-bottom:0}}
pre{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:10px 12px;overflow-x:auto;font-size:13px;line-height:1.45;filter:grayscale(1)}
pre .wrap{white-space:pre-wrap}
ol pre{white-space:pre-wrap;overflow-wrap:anywhere}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
p code,li code,td code{background:var(--card);border:1px solid var(--line);padding:0 3px;border-radius:3px;white-space:nowrap}
pre code{background:none;border:0;padding:0;white-space:inherit}
button{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--muted);border-radius:6px;padding:6px 12px;cursor:pointer}
button:hover{background:var(--info-bg)}
button:disabled{cursor:default;color:var(--muted);border-color:var(--line);background:var(--card)}
button.primary{background:var(--info);color:#fff;border-color:var(--info)}
button.primary:hover{background:#174a85}
input[type=number],input[type=search]{font:inherit;padding:4px 8px;border:1px solid var(--muted);border-radius:6px;background:var(--card);color:var(--ink);width:6em}
input[type=number]{width:4.5em}
input[type=search]{width:100%;max-width:420px}
input{color:var(--ink)}
input[type=range]{width:100%;background:none;margin-left:0;margin-right:0}
.ends{display:flex;justify-content:space-between;font-size:.94rem;color:var(--muted);margin-top:-4px}
fieldset{border:1px solid var(--line);border-radius:6px;margin:8px 0;padding:6px 10px}
legend{font-weight:600;font-size:.95rem}
label{display:inline-flex;align-items:center;gap:6px;margin:4px 12px 4px 0}
.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:4px 16px}
.fields label{justify-content:space-between;margin:4px 0}
.badge{display:inline-block;font-size:.8rem;font-weight:600;padding:1px 8px;border-radius:999px;border:1px solid;white-space:nowrap}
.b-ok{color:var(--ok);background:var(--ok-bg);border-color:var(--ok)}
.b-err{color:var(--err);background:var(--err-bg);border-color:var(--err)}
.b-info{color:var(--info);background:var(--info-bg);border-color:var(--info)}
.b-neutral{color:var(--muted);background:var(--bg);border-color:var(--line)}
.proposed{border:1px dashed var(--info);background:var(--info-bg);padding:8px 12px;border-radius:6px}
[role=tablist]{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 0}
[role=tab]{border-color:var(--line)}
[role=tab][aria-selected=true]{background:var(--info);color:#fff;border-color:var(--info)}
[role=tabpanel]{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin-top:6px}
.chips{display:flex;flex-wrap:wrap;gap:6px 22px;align-items:center;padding:0;margin:8px 0;list-style:none}
.chips li{position:relative;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 8px}
.chips li+li::before{content:"→";position:absolute;left:-17px;color:var(--muted)}
.chips.num{gap:6px}
.chips.num li+li::before{content:none}
.disc{display:block;margin:8px 0;text-align:left}
.disc::before{content:"▸";display:inline-block;width:1.1em}
.disc[aria-expanded=true]::before{content:"▾"}
.disc code{white-space:nowrap}
.loop{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:760px){.loop{grid-template-columns:3fr 2fr;grid-template-rows:auto 1fr;align-items:start}.loop figure{grid-row:1 / span 2;grid-column:1;margin:0}}
.panel{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--info);border-radius:6px;padding:12px 16px;min-height:8em}
.step-no{margin:0;color:var(--muted);font-size:.9rem}
.node rect{fill:var(--card);stroke:var(--line);stroke-width:1.5}
.node text{fill:var(--ink);font-size:15px}
.node.on rect{fill:var(--info-bg);stroke:var(--info);stroke-width:3}
.node.on text{font-weight:700}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.out{display:block;margin-top:10px}
.diceline{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;background:var(--card);border:1px solid var(--line);border-radius:6px;padding:8px;filter:grayscale(1);overflow-wrap:anywhere}
.big{font-size:1.4rem;font-weight:700}
.ok{color:var(--ok)}.err{color:var(--err)}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
ul.yes,ul.no{padding-left:0;list-style:none}
ul.yes li::before{content:"✓ ";color:var(--ok);font-weight:700}
ul.no li::before{content:"✗ ";color:var(--err);font-weight:700}
footer{max-width:800px;margin:0 auto;padding:24px 20px 48px;color:var(--muted);border-top:1px solid var(--line);font-size:.94rem}
#cOut th+th{width:36%}
@media (max-width:600px){#cOut table{font-size:.9rem}#cOut th,#cOut td{padding:5px 4px}}