:root{
  --bg:#ece8e1;
  --panel:rgba(255,255,255,.72);
  --panel-2:rgba(255,255,255,.9);
  --line:#dcd6cb;
  --line-2:#c3bbae;
  --text:#1b1710;
  --text-2:#4e4738;
  --text-3:#857c6c;
  --accent:#8f6214;
  --accent-soft:#f4ecdb;
  --accent-line:#dfcda2;
  --warn:#ad3a22;
  --good:#2f7048;
  --slate:#17120f;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --serif:'Instrument Serif',Georgia,'Times New Roman',serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none !important}
body.boot *{transition:none !important}
html,body{height:100%}
body{
  background:var(--bg); color:var(--text); font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(120% 90% at 50% 0%, #f7f4ee 0%, #ece8e1 55%, #ddd7cc 100%);
  background-attachment:fixed;
}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px; border-radius:6px}
button{font-family:inherit; color:inherit; background:none; border:none}

.page{display:flex; flex-direction:column; min-height:100vh}

/* ---------- top bar ---------- */
.bar{
  display:flex; justify-content:space-between; align-items:center; gap:12px;
  padding:max(14px, env(safe-area-inset-top)) 20px 0; flex:none;
}
.home,.icon{
  display:inline-flex; align-items:center; gap:7px; height:38px;
  color:var(--text); text-decoration:none; font:500 14px/1 var(--sans);
  background:var(--panel); border:1px solid var(--line); border-radius:999px;
  cursor:pointer; transition:background .15s, border-color .15s;
}
.home{padding:0 14px 0 10px}
.home span{font-family:var(--serif); font-size:18px; letter-spacing:.01em}
.icon{width:38px; justify-content:center; padding:0}
.home:hover,.icon:hover{background:#fff; border-color:var(--line-2)}

/* ---------- layout ---------- */
main{
  flex:1; display:grid; grid-template-columns:minmax(0,1fr) 316px;
  gap:24px; padding:10px 20px max(22px, env(safe-area-inset-bottom));
  align-items:start; align-content:start;
}
.stage{display:flex; flex-direction:column; gap:14px; min-width:0}
.titleblock{max-width:680px; padding:6px 2px 0}
.kicker{font-size:11.5px; font-weight:600; letter-spacing:.15em; text-transform:uppercase; color:var(--text-3)}
h1{
  font-family:var(--serif); font-weight:400; font-size:clamp(34px, 4.4vw, 58px);
  line-height:.98; letter-spacing:-.01em; margin:4px 0 8px;
}
.sub{font-size:14.5px; line-height:1.55; color:var(--text-2); max-width:64ch}
.sub em{color:var(--text); font-style:italic; font-family:var(--serif); font-size:17.5px}
.sub b{font-weight:600; color:var(--text)}
.lbl{
  font-size:11px; font-weight:600; letter-spacing:.12em; text-transform:uppercase;
  color:var(--text-3); display:flex; justify-content:space-between; align-items:baseline; gap:8px;
}
.srlive{position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap}
.code{font:600 12px/1 var(--mono); letter-spacing:.08em; color:var(--accent); text-transform:none}

/* ---------- the framed lock ---------- */
.slate{
  background:var(--slate); border-radius:18px; border:1px solid #0b0806;
  padding:10px 10px 8px; min-width:0;
  box-shadow:0 1px 0 rgba(255,255,255,.26) inset, 0 16px 34px -22px rgba(23,18,15,.85);
  background-image:radial-gradient(120% 130% at 20% 4%, #261e18 0%, #17120f 64%);
}
.cell{position:relative; min-width:0}
#lock{
  display:block; width:100%; max-width:1000px; margin:0 auto;
  aspect-ratio:640/318; border-radius:12px;
  cursor:ns-resize; touch-action:none;
}
#lock:focus-visible{outline:2px solid #e2bc63; outline-offset:3px}

.under{
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  padding:8px 6px 2px; min-height:34px;
}
.say{
  font-size:12.5px; line-height:1.4; color:rgba(246,238,224,.72); min-width:0;
}
.say b{color:#f8f2e6; font-weight:600}
.say.good{color:#9edeb3}
.say.bad{color:#f0a08c}
.legend{display:flex; gap:12px; flex:none; flex-wrap:wrap; justify-content:flex-end}
.legend span{
  display:inline-flex; align-items:center; gap:5px; white-space:nowrap;
  font:500 10.5px/1 var(--sans); letter-spacing:.04em; color:rgba(240,231,216,.45);
}
.sw{width:10px; height:10px; border-radius:2px; display:inline-block}
.sw.steel{background:linear-gradient(#e2e9ee,#939ca4)}
.sw.brass{background:linear-gradient(#f0cf7a,#bb8c22)}
.sw.line{height:0; border-top:2px dashed #e2bc63; border-radius:0; width:12px}
.sw.tool{background:#cfd6db; height:4px; border-radius:1px}

/* ---------- panel ---------- */
.panel{
  display:flex; flex-direction:column; gap:15px; position:sticky; top:12px;
  background:var(--panel); border:1px solid var(--line); border-radius:16px;
  padding:15px 15px 14px;
}
.grp{display:flex; flex-direction:column; gap:8px}
.note{font-size:12px; line-height:1.5; color:var(--text-3); min-height:3em}
.note b{color:var(--text-2); font-weight:600}

.top{display:flex; align-items:center; gap:13px; padding-bottom:13px; border-bottom:1px solid var(--line)}
.facefig{flex:none; width:96px; text-align:center}
#face{display:block; width:96px; height:96px; border-radius:50%; background:#17120f}
.facefig figcaption{
  font:500 10px/1.5 var(--sans); letter-spacing:.06em; text-transform:uppercase;
  color:var(--text-3); margin-top:5px;
}
.facefig span{font:600 12px/1 var(--mono); letter-spacing:0; color:var(--text-2)}
.tally{display:flex; flex-direction:column; gap:3px; min-width:0}
.tally .big{
  font-family:var(--serif); font-size:40px; line-height:.82; color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.tally .lab{font-size:12.5px; color:var(--text-2); line-height:1.35}
.tally .lab span{display:block; color:var(--text-3); font-size:11.5px}
.tally.bad .big{color:var(--warn)}
.tally.bad .lab span{color:var(--warn); font-weight:600}
.tally.open .big{color:var(--good)}
.tally.open .lab span{color:var(--good); font-weight:600}

.seg{display:flex; gap:5px}
.seg button{
  flex:1; height:34px; border-radius:9px; cursor:pointer; padding:0 2px;
  background:var(--panel-2); border:1px solid var(--line);
  font:600 12.5px/1 var(--sans); color:var(--text-2);
  transition:background .14s, border-color .14s, color .14s;
}
.seg button:hover{border-color:var(--line-2); background:#fff}
.seg button.is-on{background:var(--accent); border-color:var(--accent); color:#fff}

.row{display:flex; gap:6px}
.btn{
  display:flex; flex-direction:column; gap:2px; text-align:left;
  padding:8px 11px; border-radius:10px; cursor:pointer;
  background:var(--panel-2); border:1px solid var(--line);
  transition:background .14s, border-color .14s, transform .08s;
}
.btn b{font-size:13.5px; font-weight:600}
.btn span{font-size:11.5px; color:var(--text-3); line-height:1.35}
.btn:hover{background:#fff; border-color:var(--line-2)}
.btn:active{transform:translateY(1px)}
.btn[aria-pressed="true"]{background:var(--accent-soft); border-color:var(--accent-line)}
.btn[aria-pressed="true"] b{color:var(--accent)}
.btn.wide{
  align-items:center; justify-content:center; text-align:center; flex:1;
  font-size:13px; font-weight:600; padding:0 8px; height:36px;
}
.btn:disabled{opacity:.42; cursor:default}
.btn:disabled:hover{background:var(--panel-2); border-color:var(--line)}

.foot{font-size:11.5px; line-height:1.6; color:var(--text-3); border-top:1px solid var(--line); padding-top:12px}
.link{
  color:var(--accent); cursor:pointer; font:inherit; font-weight:600; text-align:left;
  text-decoration:underline; text-underline-offset:2px;
}
.link:hover{color:#6d4a0d}

/* ---------- about ---------- */
dialog{
  border:none; padding:0; background:transparent; max-width:min(690px, 92vw);
  max-height:86vh; margin:auto;
}
dialog::backdrop{background:rgba(23,18,15,.5); backdrop-filter:blur(3px)}
.about{
  position:relative; background:#fbf9f4; border:1px solid var(--line);
  border-radius:18px; padding:26px 28px 24px; overflow-y:auto; max-height:86vh;
  box-shadow:0 30px 60px -30px rgba(23,18,15,.6);
}
.about h2{font-family:var(--serif); font-weight:400; font-size:31px; line-height:1.05; margin:4px 0 14px}
.about p{font-size:14.5px; line-height:1.66; color:var(--text-2); margin-bottom:12px}
.about p b{color:var(--text); font-weight:600}
.about em{font-style:italic}
.about .fine{font-size:12.5px; color:var(--text-3); border-top:1px solid var(--line); padding-top:12px; margin-top:16px; margin-bottom:0}
.about .code{font-size:12px; color:var(--text-2)}
kbd{
  font:600 11px/1.6 var(--mono); background:#fff; border:1px solid var(--line-2);
  border-bottom-width:2px; border-radius:5px; padding:1px 5px;
}
.x{
  position:absolute; top:14px; right:14px; width:32px; height:32px; cursor:pointer;
  display:flex; align-items:center; justify-content:center; color:var(--text-3);
  background:#fff; border:1px solid var(--line); border-radius:999px;
}
.x:hover{color:var(--text); border-color:var(--line-2)}

/* ---------- narrow ---------- */
@media (max-width:880px){
  main{grid-template-columns:minmax(0,1fr); gap:16px; padding:8px 14px max(20px, env(safe-area-inset-bottom))}
  .panel{position:static}
  .titleblock{padding-top:2px}
  h1{font-size:clamp(30px, 9vw, 42px)}
  .sub{font-size:14px}
  .slate{padding:8px 8px 6px; border-radius:15px}
  #lock{aspect-ratio:428/318}
  .under{flex-direction:column; align-items:flex-start; gap:7px}
  .legend{justify-content:flex-start}
  .about{padding:22px 20px 20px; border-radius:15px}
  .about h2{font-size:26px}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important}
}