/* Ironstrike brand tokens (copied from ironstrike-ai/index.html). Zero dependencies. */
:root{--bg:#0a0a0b;--panel:#141416;--steel-line:#38393e;--text:#eae8e4;--dim:#9a9a9f;--ember:#f5821f;--ember-bright:#ff9e42}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:760px;margin:0 auto;padding:24px 16px}
main.wrap{flex:1}
h1{font-size:2rem;line-height:1.15;margin:0 0 8px}
p{margin:0 0 12px}
a{color:var(--ember-bright)}
.lede{color:var(--dim)}
button,.btn{min-height:44px;min-width:44px;padding:10px 20px;font:inherit;font-weight:600;color:#0a0a0b;background:var(--ember);border:0;border-radius:8px;cursor:pointer}
button:focus-visible,a:focus-visible{outline:3px solid var(--ember-bright);outline-offset:2px}
.is-footer{border-top:1px solid var(--steel-line);color:var(--dim);font-size:.875rem;padding:16px;max-width:760px;margin:0 auto;width:100%}
.is-footer p{margin:0 0 8px}
.is-footer a{padding:14px 6px;margin:-14px -6px}
.tabs{display:flex;gap:20px;margin:16px 0;border-bottom:1px solid var(--steel-line)}
.tab{background:none;color:var(--dim);padding:8px 2px;border-radius:0;border-bottom:3px solid transparent}
.tab[aria-pressed=true]{color:var(--text);border-bottom-color:var(--ember)}
[hidden]{display:none!important}
.cols{display:block}
.pile{margin:0 0 14px}
.plabel{display:block;color:var(--dim);font-size:.875rem;margin-bottom:6px}
.stones{display:flex;flex-wrap:wrap;gap:8px;align-items:center;min-height:44px}
.stone{width:44px;height:44px;min-width:44px;padding:0;border-radius:50%;background:#5b5d66;border:2px solid #7d7f88}
.stone[aria-pressed=true]{background:var(--ember);border-color:var(--ember-bright)}
.stone:disabled{cursor:default;opacity:.85}
.empty{color:var(--dim);font-size:.875rem}
.status{min-height:3em;margin:12px 0}
.wide{width:100%;min-height:48px}
.wide:disabled{background:var(--steel-line);color:var(--dim);cursor:default}
.alt{background:var(--panel);color:var(--text);border:1px solid var(--steel-line);margin-top:12px}
.first{border:1px solid var(--steel-line);border-radius:8px;margin:16px 0 0;padding:8px 12px}
.first label{display:inline-flex;align-items:center;gap:6px;min-height:44px;margin-right:16px}
.first input{width:20px;height:20px}
.dim{color:var(--dim)}
.log{margin:4px 0 12px;padding-left:22px;max-height:12em;overflow:auto;color:var(--dim);font-size:.9rem}
table{border-collapse:collapse;width:100%;max-width:420px;margin:12px 0}
th,td{text-align:left;padding:6px 10px;border-bottom:1px solid var(--steel-line)}
caption{text-align:left;color:var(--dim);padding-bottom:4px}
@media (min-width:820px){.wrap{padding:40px 24px}h1{font-size:2.6rem}.stone{width:56px;height:56px}#how{max-width:70ch}}
@media (min-width:1440px){.wrap{max-width:960px}.cols{display:grid;grid-template-columns:1fr 340px;gap:40px}}