*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:18px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:#f6f3ee;color:#1d1d1d;padding-bottom:84px;overflow-x:hidden}
header{background:#1f4e5f;color:#fff;padding:12px 16px;display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
header h1{font-size:20px;margin:0}.sub{opacity:.85;font-size:16px}
main{max-width:900px;margin:0 auto;padding:14px}
nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:#fff;border-top:1px solid #ccc;padding-bottom:env(safe-area-inset-bottom);z-index:9}
nav a{flex:1;text-align:center;padding:8px 0 10px;min-height:64px;color:#444;text-decoration:none;font-size:16px;font-weight:600}
nav a b{display:block;font-size:22px}nav a.on{color:#1f4e5f;background:#e3eef1}
h2{font-size:22px;margin:6px 0 12px}h3{font-size:19px;margin:16px 0 8px}
.card{background:#fff;border-radius:12px;padding:14px;margin:0 0 12px;box-shadow:0 1px 3px #0002;overflow-wrap:anywhere}
a.card{display:block;color:inherit;text-decoration:none}a.card:active{background:#eef}
.muted{color:#666;font-size:16px}.badge{display:inline-block;background:#c62828;color:#fff;border-radius:6px;padding:2px 8px;font-size:16px;font-weight:700;margin-left:6px;vertical-align:middle}
.num{display:inline-block;min-width:34px;height:34px;line-height:34px;text-align:center;background:#1f4e5f;color:#fff;border-radius:50%;font-weight:700;margin-right:8px}
.crit{border-left:6px solid #c62828}ul{padding-left:22px;margin:6px 0}li{margin:3px 0}
.back{display:inline-block;padding:10px 14px;margin-bottom:8px;background:#fff;border-radius:10px;text-decoration:none;color:#1f4e5f;font-weight:600}
table{width:100%;border-collapse:collapse;font-size:16px}td,th{padding:8px 6px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}
.big{display:block;text-align:center;background:#1f4e5f;color:#fff;font-size:22px;font-weight:700;padding:22px;border-radius:14px;text-decoration:none;margin:12px 0}
.walls{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.walls button,.mk{font:inherit;font-weight:700;min-height:48px;min-width:56px;padding:8px 12px;border:2px solid #1f4e5f;background:#fff;color:#1f4e5f;border-radius:10px}
.walls button.on{background:#1f4e5f;color:#fff}
#readout{font-size:30px;font-weight:800;text-align:center;margin:6px 0}#snap{text-align:center;min-height:28px;font-size:20px;font-weight:700;color:#c62828}
svg.wall{width:100%;height:auto;touch-action:none;user-select:none;-webkit-user-select:none;background:#fff;border-radius:12px;display:block}
.mlist button{width:100%;display:flex;justify-content:space-between;text-align:left;font:inherit;padding:12px;border:0;border-bottom:1px solid #eee;background:#fff;min-height:48px}
.mlist button.on{background:#ffe9e9}
#svgwrap{position:relative;padding-bottom:40px;touch-action:none;user-select:none}
#knob{position:absolute;bottom:0;width:48px;height:48px;margin-left:-24px;border-radius:50%;background:#c62828;border:4px solid #fff;box-shadow:0 2px 6px #0005;pointer-events:none}
#knob::before{content:"";position:absolute;left:calc(50% - 1px + var(--stem,0px));top:-10px;width:2px;height:12px;background:#c62828}
#model3d{margin-top:12px}#model3d canvas{max-width:100%}#model3d section{background:#fff;border-radius:12px;padding:10px;margin-bottom:12px}#model3d>div>div{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}
.mlist-row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px;padding:12px;border-bottom:1px solid #eee}
:root{--nav-h:84px}main{padding-bottom:calc(var(--nav-h) + env(safe-area-inset-bottom) + 16px)}#svgwrap{scroll-margin-bottom:calc(var(--nav-h) + env(safe-area-inset-bottom) + 12px);scroll-margin-top:12px}
nav a{min-width:0;padding-left:0;padding-right:0;letter-spacing:-.3px}
.seg{display:flex;gap:0;margin:0 0 12px}.seg button{flex:1;font:inherit;font-weight:700;min-height:48px;border:2px solid #1f4e5f;background:#fff;color:#1f4e5f}.seg button:first-child{border-radius:10px 0 0 10px}.seg button:last-child{border-radius:0 10px 10px 0}.seg button.on{background:#1f4e5f;color:#fff}
.badge.ov{background:#e6a100;color:#111}.banner{display:block;background:#fff3cd;border:2px solid #e6a100;color:#111;border-radius:10px;padding:10px 12px;margin-bottom:12px;text-decoration:none;font-size:16px;min-height:44px}
.row{display:flex;align-items:center;gap:8px;margin:8px 0}.row input{font:inherit;font-size:20px;width:9em;min-height:48px;padding:6px 10px;border:2px solid #999;border-radius:10px}
.bigbtn{display:block;width:100%;font:inherit;font-weight:700;min-height:52px;border-radius:12px;border:2px solid #c62828;background:#fff;color:#c62828}
details.assume{background:#fff;border-radius:12px;padding:0 12px;margin-bottom:12px}details.assume>summary{min-height:48px;display:flex;align-items:center;font-weight:700;cursor:pointer}
.mk{border-left:8px solid var(--c)!important}.mk b,.mk>span:last-child{color:var(--c)}.mk .sub{color:#444;font-size:16px}.mrow{display:flex;justify-content:space-between;gap:8px;padding:12px;border-bottom:1px solid #eee;background:#fafafa}
.legend{display:flex;flex-wrap:wrap;gap:8px 14px;margin:4px 0 10px;font-size:16px}.lg{color:var(--c);font-weight:700;display:inline-flex;align-items:center;gap:6px}.lg i{display:inline-block;width:16px;height:16px;border-radius:4px;background:var(--c)}
.disp{font-weight:600;margin-top:4px}.conflict{background:#fff1f0;border-left:5px solid #b71c1c;padding:6px 8px;margin:6px 0;font-size:16px;border-radius:6px}.note{background:#eef5ff;border-left:5px solid #0d47a1;padding:6px 8px;margin:6px 0;border-radius:6px}.lnk{display:inline-block;min-height:44px;padding-top:10px}
#svgwrap{overflow-x:clip}
@media (max-width:700px){#tapeblock{position:sticky;top:0;z-index:5;background:#f4f1ec;padding:6px 0 0;margin:0 -2px;box-shadow:0 6px 8px -6px #0004}#tapeblock #svgwrap{padding-bottom:50px}}
.cutlist{padding:0}.crow{display:grid;grid-template-columns:minmax(0,1fr) 4em 8.5em;gap:8px;padding:8px 10px;border-bottom:1px solid #eee;align-items:start}.cutlist.hasb .crow{grid-template-columns:minmax(0,1fr) 4em 8.5em 6em}.chead{font-weight:700;background:#fafafa}.crow i{display:none;font-style:normal;color:#555;font-weight:600}.crow>*{min-width:0;overflow-wrap:anywhere}.splice{color:#555}
@media (max-width:700px){.chead{display:none}.crow,.cutlist.hasb .crow{grid-template-columns:1fr 1fr;padding:12px}.cname{grid-column:1/-1}.crow i{display:inline}.cbrd{grid-column:1/-1}.clen{text-align:right}.cqty{}}