#mode button{padding:9px 16px;font:600 13px Unbounded,sans-serif}
#snd button{min-width:96px}
.board{background:var(--wood2);border:3px solid #120b06;border-radius:14px;padding:8px 8px 2px;margin-bottom:18px;box-shadow:0 8px 0 var(--sh),inset 0 0 0 2px rgba(255,255,255,.06)}
.scroll{overflow-x:auto}
#fb svg{width:100%;min-width:960px;height:auto}
.info{color:var(--mute);font-size:14px;margin:2px 8px 8px;min-height:22px}.info b{font-size:19px;color:var(--ink)}
.board .info{color:#d6cdb8}.board .info b{color:#fff}
#fb g[data-m]{cursor:pointer}
g.hit circle{stroke:var(--acc)!important;stroke-width:4px}
#fb line.sl{transform-box:fill-box;transform-origin:center}
#fb line.sl.vib{animation:vib .65s ease-out}
@keyframes vib{0%{transform:translateY(0)}12%{transform:translateY(-2.6px)}26%{transform:translateY(2.2px)}40%{transform:translateY(-1.5px)}54%{transform:translateY(1px)}70%{transform:translateY(-.5px)}100%{transform:translateY(0)}}
.cell{fill:rgba(0,0,0,0);cursor:pointer}.cell:hover{fill:var(--acc);fill-opacity:.2}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{border:2px solid var(--edge);border-bottom-width:5px;border-radius:6px;padding:8px 12px;min-width:104px;background:var(--card)}
.chip b{font:600 19px/1 Unbounded,sans-serif;display:block}.chip.r{border-color:var(--root)}
.chip span{display:block;font-size:12.5px;color:var(--mute)}.chip .n{font-size:15px;color:var(--ink);font-weight:700;margin-top:3px}
.formula{margin-top:12px;color:var(--mute);font-size:14px}.formula code{color:var(--ink);font-weight:700}
.cards{display:flex;gap:14px;overflow-x:auto;padding:4px 4px 10px}
.sh,.dc{border:2px solid var(--edge);background:var(--card);border-radius:7px;box-shadow:0 4px 0 var(--edge);cursor:pointer;text-align:center;flex:0 0 auto;transition:transform .08s,box-shadow .08s}
.sh{padding:8px 10px 10px}.dc{padding:8px 14px;min-width:78px}
.sh:hover,.dc:hover{border-color:var(--link)}.sh:active,.dc:active{transform:translateY(3px);box-shadow:0 1px 0 var(--edge)}
.sh.on,.dc.on{background:var(--acc);transform:translateY(2px);box-shadow:0 2px 0 var(--edge)}.sh.on b,.sh.on span,.dc.on b,.dc.on span{color:var(--accink)}
.sh b{display:block;font-size:15px}.sh span{font-size:12.5px;color:var(--mute)}.sh svg{margin:0 auto 4px}
.dc b{display:block;font:600 18px/1.15 Unbounded,sans-serif}.dc span{font-size:12.5px;color:var(--mute)}
.top{display:flex;gap:22px;align-items:flex-start;flex-wrap:wrap}.ctrl{flex:1 1 520px;min-width:0}
.bars{display:grid;gap:10px}.bar{border:2px solid var(--edge);border-radius:4px;padding:8px 6px;text-align:center;background:var(--card)}
.bar b{display:block;font:600 16px Unbounded,sans-serif}.bar span{font-size:12px;color:var(--mute)}
.bar.now{background:var(--acc);color:var(--accink)}.bar.now span{color:var(--accink)}
.idmain{margin-bottom:10px;font-size:15px;line-height:1.65}
.relrow{display:flex;gap:10px;align-items:flex-start;flex-wrap:wrap;margin:10px 0}.rdeg{min-width:34px;font:600 16px Unbounded,sans-serif}.rn{min-width:30px;font-weight:700;color:var(--mute);padding-top:6px}.relrow .seg button{padding:3px 10px}
#hx{border:2px solid var(--edge);background:var(--card);border-radius:7px;width:32px;height:32px;cursor:pointer;box-shadow:0 2px 0 var(--edge);flex:0 0 auto}
.help{position:fixed;z-index:60;right:0;top:0;bottom:0;width:min(430px,100%);background:var(--card);border-left:2px solid var(--edge);padding:calc(18px + env(safe-area-inset-top,0px)) 20px calc(22px + env(safe-area-inset-bottom,0px)) 34px;overflow:auto;box-shadow:0 0 40px rgba(0,0,0,.3)}
.help::before{content:"";position:absolute;left:0;top:0;bottom:0;width:15px;background:linear-gradient(90deg,var(--pearl) 0 4px,#16100a 4px 6px,var(--pearl) 6px 10px,var(--acc) 10px 15px);border-right:2px solid var(--edge)}
@media (max-width:760px){.help{top:auto;left:0;width:100%;max-height:74vh;border-left:0;border-top:2px solid var(--edge);border-radius:18px 18px 0 0;padding-top:18px}.help::before{display:none}}
.hh{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:10px}
.help h2{font:600 18px/1.25 Unbounded,sans-serif;margin:0}
.help h3{font-size:15px;margin:16px 0 4px}.help p,.help li{font-size:14.5px;margin:0 0 6px}.help ul{padding-left:20px;margin:4px 0}
.help .lead{font-size:16px}.help summary{cursor:pointer;font-weight:700;margin:14px 0 4px;color:var(--link)}
.try-l{font-size:13px;color:var(--mute);margin:12px 0 6px!important}.try{display:flex;flex-wrap:wrap;gap:6px}
.tb{width:100%;border-collapse:collapse;font-size:14px}.tb td,.tb th{border-bottom:1px solid var(--line);padding:4px 6px;text-align:left}
@media (min-width:1000px) and (min-height:720px){main{display:flex;flex-direction:column}.topbar,h1,.sub{order:-3}.board{order:-2;position:sticky;top:8px;z-index:6}}
.pdot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:6px;vertical-align:1px}