:root{--paper:#f3f4f1;--card:#fff;--inset:#f8f9f7;--ink:#141a17;--ink2:#4a534d;--ink3:#7a837c;
 --rule:#d9ddd6;--rule2:#c3c9be;--green:#1c5f3f;--green-bg:#e4efe8;--amber:#8a5d10;--amber-bg:#f7efdc}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#0d100e;--card:#161a18;
 --inset:#121614;--ink:#e8ebe7;--ink2:#a4ada7;--ink3:#757e78;--rule:#252b28;--green:#5fb98a;
 --green-bg:#132419;--amber:#d3a44e;--amber-bg:#2a2113}}
:root[data-theme=dark]{--paper:#0d100e;--card:#161a18;--inset:#121614;--ink:#e8ebe7;--ink2:#a4ada7;
 --ink3:#757e78;--rule:#252b28;--green:#5fb98a;--green-bg:#132419;--amber:#d3a44e;--amber-bg:#2a2113}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--paper);color:var(--ink);font-family:Karla,system-ui,-apple-system,sans-serif;
 font-size:15px;line-height:1.6;padding:0 18px 70px;-webkit-font-smoothing:antialiased}
.w{max-width:660px;margin:0 auto}
.mast{border-bottom:2px solid var(--ink);padding:20px 0 13px;display:flex;justify-content:space-between;
 align-items:baseline;gap:12px;flex-wrap:wrap}
.mast b{font-family:Literata,Georgia,serif;font-size:20px;font-weight:700}
.stand{color:var(--ink2);font-size:16.5px;margin-bottom:22px;line-height:1.5}
.card{background:var(--card);border:1px solid var(--rule);border-radius:5px;padding:20px}
.f{margin-bottom:14px}
.f label{display:block;font-size:12px;font-weight:600;color:var(--ink2);margin-bottom:5px}
.f input,.f select{width:100%;font:inherit;font-size:14.5px;padding:9px 11px;border:1px solid var(--rule);
 border-radius:4px;background:var(--inset);color:var(--ink)}
.f input:focus,.f select:focus{outline:2px solid var(--green);outline-offset:1px;border-color:var(--green)}
.f select:invalid{color:var(--ink3)}
.f input::placeholder{color:var(--ink3);opacity:1}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.btn{width:100%;background:var(--green);color:var(--paper);border:0;border-radius:4px;padding:14px;
 font:inherit;font-weight:700;font-size:15.5px;cursor:pointer;margin-top:6px}
.btn:hover{filter:brightness(1.12)}
.btn:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.hint{font-size:11.5px;color:var(--ink3);margin-top:12px;text-align:center;max-width:none}
.ms{position:relative}
.ms-t{width:100%;font:inherit;font-size:14.5px;padding:9px 11px;border:1px solid var(--rule);
 border-radius:4px;background:var(--inset);color:var(--ink);text-align:left;cursor:pointer;
 display:flex;align-items:center;justify-content:space-between;gap:8px}
.ms-t:focus-visible{outline:2px solid var(--green);outline-offset:1px;border-color:var(--green)}
.ms-t span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ms-t svg{flex:0 0 auto;transition:transform .15s}
.ms-t[aria-expanded=true] svg{transform:rotate(180deg)}
/* scoped to #ms so these beat the generic .f label / .f input field rules */
#ms .ms-p{display:none;position:absolute;z-index:20;top:calc(100% + 4px);left:0;right:0;
 background:var(--card);border:1px solid var(--rule2);border-radius:4px;padding:6px;
 max-height:246px;overflow-y:auto;box-shadow:0 6px 20px rgba(20,26,23,.14)}
#ms .ms-p.on{display:block}
#ms label.ms-i{display:flex;align-items:center;gap:11px;padding:8px 9px;border-radius:3px;
 cursor:pointer;font-size:13.5px;color:var(--ink2);font-weight:400;margin:0}
#ms label.ms-i span{flex:1;min-width:0}
#ms label.ms-i:hover{background:var(--inset)}
#ms .ms-i input[type=checkbox]{appearance:none;-webkit-appearance:none;width:16px;height:16px;min-width:16px;flex:0 0 16px;margin:0;padding:0;border:1.5px solid var(--rule2);border-radius:3px;background:var(--card);cursor:pointer;display:grid;place-content:center}
#ms .ms-i input[type=checkbox]:checked{background:var(--green);border-color:var(--green)}
#ms .ms-i input[type=checkbox]:checked::after{content:"";width:9px;height:9px;background:var(--card);clip-path:polygon(14% 45%,0 60%,39% 100%,100% 26%,85% 12%,39% 70%)}
#ms .ms-i input[type=checkbox]:focus-visible{outline:2px solid var(--green);outline-offset:2px}
#ms label.ms-i.all{font-weight:600;color:var(--ink)}
#ms .ms-sep{height:1px;background:var(--rule);margin:5px 2px}
.err{display:none;background:var(--amber-bg);color:var(--amber);border-radius:4px;padding:9px 12px;
 font-size:13px;margin-top:12px;font-weight:600}
h2{font-family:Literata,Georgia,serif;font-size:21px;font-weight:700;margin:40px 0 10px;letter-spacing:-.01em}
h3{font-family:Literata,Georgia,serif;font-size:16px;font-weight:600;margin:22px 0 8px}
p{margin-bottom:13px;color:var(--ink2);max-width:62ch}
p b{color:var(--ink);font-weight:600}
p:last-child{margin-bottom:0}
em{font-style:italic}
.quiet{background:var(--inset);border:1px solid var(--rule);border-radius:5px;padding:16px 18px;margin-top:22px}
.quiet p{font-size:13.5px;margin-bottom:9px;max-width:none}
/* justified body copy on the landing page; hyphenation keeps the word gaps from opening up */
#landing > p, #landing .quiet p{text-align:justify;max-width:none;
 -webkit-hyphens:auto;hyphens:auto;text-wrap:pretty}
.board{font-size:12.5px;color:var(--ink3);border-top:1px solid var(--rule);margin-top:34px;padding-top:16px;line-height:1.6}
.board b{color:var(--ink)}
a{color:var(--green);text-underline-offset:2px}
.back{display:inline-block;font-size:13px;color:var(--green);text-decoration:none;margin:18px 0 4px;font-weight:600}
.rep-h{display:flex;justify-content:space-between;align-items:baseline;gap:10px;flex-wrap:wrap;
 font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--ink3);
 border-bottom:1px solid var(--rule);padding-bottom:10px;margin-bottom:18px}
.verdict{text-align:center;padding:6px 0 4px}
.v-k{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
 color:var(--green);margin-bottom:10px}
.v-n{font-family:Literata,serif;font-size:min(52px,calc(16vw - 13px));font-weight:700;
 line-height:1.05;letter-spacing:-.02em;white-space:nowrap}
.v-n small{font-size:20px;font-weight:400;color:var(--ink3)}
.v-mid{font-size:14px;color:var(--ink2);margin-top:10px}
.v-mid b{color:var(--ink)}
.conf{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--green);border-radius:20px;
 padding:5px 14px;margin-top:14px;font-size:12.5px;color:var(--ink2);background:none;
 font-family:inherit;cursor:pointer}
.conf:hover{background:var(--green-bg)}
.conf:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.conf i{width:7px;height:7px;border-radius:50%;background:var(--green);font-style:normal}
.conf b{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.08em;
 text-transform:uppercase;color:var(--green)}
.conf u{text-decoration:none;color:var(--ink3);font-size:14px;line-height:1;transition:transform .15s}
.conf[aria-expanded=true] u{transform:rotate(180deg);display:inline-block}
.conf.mod{border-color:var(--amber)} .conf.mod i{background:var(--amber)} .conf.mod b{color:var(--amber)}
.why{display:none;text-align:left;background:var(--inset);border:1px solid var(--rule);border-radius:4px;
 padding:14px 16px;margin-top:12px;font-size:13.5px;line-height:1.6;color:var(--ink2)}
.why.on{display:block}
.why b{color:var(--ink)}
/* similarity badge */
.cs-sw{flex:0 0 76px;display:flex;justify-content:center;padding-top:2px}
.cs-s{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
 font-family:Literata,serif;font-size:15px;font-weight:700;background:var(--rule);color:var(--ink3)}
.cs-s.hi{background:var(--green);color:var(--card)}
.cs-s.md{background:var(--green-bg);color:var(--green)}
.howsim{font-size:12.5px;color:var(--ink3);line-height:1.55;margin-bottom:14px;max-width:none;
 display:flex;align-items:center;gap:10px}
.cs-h{display:flex;gap:14px;align-items:flex-end;padding-bottom:8px;border-bottom:1px solid var(--rule)}
.cs-h span{font-family:'JetBrains Mono',monospace;font-size:9.5px;letter-spacing:.1em;
 text-transform:uppercase;color:var(--ink3);font-weight:500;line-height:1.3}
.cs-h .h-n{flex:0 0 62px;text-align:right}
.cs-h .h-c{flex:1;min-width:0}
.cs-h .h-s{flex:0 0 76px;text-align:center;min-width:0;overflow:hidden}
.howsim .key{flex:0 0 auto;display:flex;gap:5px}
.howsim .key span{width:19px;height:19px;border-radius:50%;font-size:9px;font-weight:700;
 display:grid;place-items:center;font-family:Karla,sans-serif}
.filt{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:24px 0 10px}
.filt h4{font-family:Literata,serif;font-size:16px;font-weight:600}
.filt button{background:none;border:0;color:var(--green);font:inherit;font-size:12.5px;
 font-weight:600;cursor:pointer;padding:0;text-decoration:underline}
/* calculator comparison */
.vs{border:1px solid var(--rule);border-radius:5px;overflow:hidden;margin:20px 0;background:var(--card)}
.vs-r{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--rule)}
.vs-r:first-child{border-top:0}
.vs-h{background:var(--inset);font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.1em;
 text-transform:uppercase;font-weight:500;padding:10px 15px}
.vs-h.a{color:var(--green)} .vs-h.b{color:var(--ink3)}
.vs-c{padding:13px 15px;font-size:13.5px;line-height:1.5;border-left:1px solid var(--rule)}
.vs-c:first-child{border-left:0}
.vs-c.a{color:var(--ink)} .vs-c.b{color:var(--ink3)}
.vs-c b{display:block;font-size:12px;font-weight:700;margin-bottom:4px;color:var(--ink2)}
.vs-c.a b{color:var(--green)}
/* results panel: the plain-language answer, and the button that copies it */
.result{background:var(--inset);border:1px solid var(--rule2);border-left:3px solid var(--green);
 border-radius:4px;padding:17px 19px;margin-top:22px}
.result-k{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:.14em;
 text-transform:uppercase;color:var(--green);font-weight:500;margin-bottom:10px}
.summary{font-size:15.5px;line-height:1.62;color:var(--ink);text-align:justify;
 -webkit-hyphens:auto;hyphens:auto;max-width:none}
.summary b{color:var(--ink);font-weight:700}
.summary .caution{display:block;margin-top:9px;font-size:14px;color:var(--ink2);text-align:left}
.result button{width:100%;margin-top:15px;font:inherit;font-size:14.5px;font-weight:700;
 border-radius:4px;padding:12px;cursor:pointer;border:1px solid var(--green);
 background:var(--green);color:var(--paper);transition:background .12s,color .12s}
.result button:hover{filter:brightness(1.12)}
.result button:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.result button.done{background:var(--green-bg);color:var(--green)}
.dist{margin-top:20px;padding-top:18px;border-top:1px solid var(--rule)}
.dist-k{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;
 color:var(--ink3);margin-bottom:12px}
/* histogram — each column is a full-height click target */
.bars{display:flex;align-items:stretch;gap:3px;height:96px}
.bcol{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:flex-end;
 background:none;border:0;padding:0 0 2px;cursor:pointer;border-radius:3px 3px 0 0;position:relative}
.bcol i{display:block;background:var(--rule);border-radius:2px 2px 0 0;min-height:3px;transition:background .12s}
.bcol.in i{background:var(--green);opacity:.45}
.bcol.med i{background:var(--green);opacity:1}
.bcol:hover{background:var(--green-bg)}
.bcol:hover i{background:var(--green);opacity:.8}
.bcol:focus-visible{outline:2px solid var(--green);outline-offset:1px}
.bcol.sel{background:var(--green-bg);box-shadow:inset 0 -2px 0 var(--green)}
.bcol.sel i{background:var(--green);opacity:1}
.bcol[disabled]{cursor:default}
.bcol[disabled]:hover{background:none}
.bcol[disabled]:hover i{background:var(--rule);opacity:1}
.bx{display:flex;gap:3px;margin-top:5px;overflow:hidden}
.bx span{flex:1;text-align:center;font-family:'JetBrains Mono',monospace;font-size:8.5px;
 color:var(--ink3);min-width:0;white-space:nowrap}
.bhint{font-size:12px;color:var(--ink3);margin-top:10px;text-align:center;max-width:none}
.bhint b{color:var(--green)}
.assume{background:var(--inset);border:1px solid var(--rule);border-radius:4px;padding:11px 14px;
 font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--ink2);margin-top:16px;line-height:1.6}
.assume span{color:var(--ink3)}
.cs{display:flex;flex-wrap:wrap;gap:0 14px;padding:12px 0;border-top:1px solid var(--rule);align-items:flex-start}
.cs:first-of-type{border-top:0}
.cs-n{font-family:Literata,serif;font-size:17px;font-weight:700;color:var(--green);
 flex:0 0 62px;white-space:nowrap;font-variant-numeric:tabular-nums;text-align:right;padding-top:1px}
.cs-b{flex:1;min-width:0}
.cs-t{font-size:13.5px;font-weight:600;line-height:1.35}
.cs-d{flex:0 0 100%;font-size:11.5px;color:var(--ink3);margin-top:5px;line-height:1.45;
 padding-left:90px;padding-right:76px}
.cs-d span{white-space:nowrap}
.cs-d i{font-style:normal;color:var(--rule2)}
.cs-t a{color:inherit;text-decoration:none;border-bottom:1px solid var(--rule)}
.cs-t a:hover{color:var(--green);border-color:var(--green)}
.cs-d{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink3);margin-top:3px}
.more{width:100%;margin-top:12px;padding:10px;background:var(--inset);border:1px solid var(--rule);
 border-radius:4px;font:inherit;font-size:13px;font-weight:600;color:var(--green);cursor:pointer}
.val{display:flex;gap:13px;align-items:flex-start;background:var(--green-bg);border-radius:4px;padding:12px 14px;margin-top:18px}
.val-n{font-family:Literata,serif;font-size:25px;font-weight:700;color:var(--green);line-height:1;flex:0 0 auto}
.val-t{font-size:12.5px;color:var(--ink2);line-height:1.5}
.val-t b{color:var(--ink)}
.meth{font-size:12px;color:var(--ink3);margin-top:18px;line-height:1.6;max-width:none}
#report{display:none}
@media(max-width:460px){.row{grid-template-columns:1fr;gap:0}
 .vs-c{padding:11px 12px;font-size:12.5px}.vs-h{padding:9px 12px;font-size:9px}
 .howsim{flex-direction:column;align-items:flex-start;gap:7px}
 .cs{gap:0 10px}.cs-s{width:40px;height:40px;font-size:13px}.cs-sw{flex:0 0 66px}
 .cs-d{padding-left:0;padding-right:0;font-size:11px}
 .cs-h{gap:10px}.cs-h .h-s{flex:0 0 66px}.cs-h .h-n{flex:0 0 62px;text-align:right}}
@media print{body{padding:0}.back,.more{display:none}
 .card{border:0}#landing{display:none!important}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}