@font-face{font-family:"EB Garamond";src:url(fonts/EBGaramond.woff2) format("woff2");font-weight:400 800;font-style:normal;font-display:swap}
@font-face{font-family:"EB Garamond";src:url(fonts/EBGaramond-Italic.woff2) format("woff2");font-weight:400 800;font-style:italic;font-display:swap}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-normal-latin.woff2) format("woff2");font-weight:200 900;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-normal-latin-ext.woff2) format("woff2");font-weight:200 900;font-style:normal;font-display:swap;unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-italic-latin.woff2) format("woff2");font-weight:200 900;font-style:italic;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-italic-latin-ext.woff2) format("woff2");font-weight:200 900;font-style:italic;font-display:swap;unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex Mono";src:url(fonts/IBMPlexMono-Regular.woff2) format("woff2");font-display:swap}

:root{
  --bg:#f2efe6;--ink:#1c1d18;--ink-2:#4a4b41;--rule:#d8d3c3;--rule-2:#a9a592;--link:#7a3413;--bar-bg:rgba(242,239,230,.92);
  --card:#faf8f2;--you:#1d6b45;--you-soft:rgba(29,107,69,.16);--band:#b86e12;--band-soft:rgba(184,110,18,.30);--line:#5c5d52;--grid:#dcd7c8;--mut:#6b6a5c;--hi:#1d6b45;--right:#1d6b45;--wrong:#a3341f;
  --serif:"Source Serif 4",Georgia,serif;--display:"EB Garamond",Garamond,Georgia,serif;--mono:"Plex Mono",ui-monospace,Menlo,monospace;
  color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#11130f;--ink:#e9e6da;--ink-2:#b8b5a6;--rule:#2c2f27;--rule-2:#545748;--link:#efa27c;--bar-bg:rgba(17,19,15,.92);
  --card:#1a1d17;--you:#7fd3a4;--you-soft:rgba(127,211,164,.16);--band:#f0b25a;--band-soft:rgba(240,178,90,.30);--line:#a9a898;--grid:#2a2d25;--mut:#a3a192;--hi:#7fd3a4;--right:#7fd3a4;--wrong:#f29a84;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#11130f;--ink:#e9e6da;--ink-2:#b8b5a6;--rule:#2c2f27;--rule-2:#545748;--link:#efa27c;--bar-bg:rgba(17,19,15,.92);
  --card:#1a1d17;--you:#7fd3a4;--you-soft:rgba(127,211,164,.16);--band:#f0b25a;--band-soft:rgba(240,178,90,.30);--line:#a9a898;--grid:#2a2d25;--mut:#a3a192;--hi:#7fd3a4;--right:#7fd3a4;--wrong:#f29a84;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:1.14rem/1.62 var(--serif);font-feature-settings:"onum" 0}
a{color:var(--link)}
:focus-visible{outline:3px solid var(--hi);outline-offset:2px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--card);color:var(--ink);padding:.5rem .8rem;z-index:99}
.skip:focus{left:.5rem;top:.5rem}

/* topbar */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:.9rem;height:2.75rem;padding:0 1rem;background:var(--bar-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--rule);font-size:.9rem;font-family:var(--serif)}
.topbar a{color:var(--ink);text-decoration:none}
.topbar .home{font-weight:600;white-space:nowrap}
.topnav{display:flex;gap:1rem;overflow-x:auto;scrollbar-width:none;min-width:0;flex:0 1 auto}
.topnav::-webkit-scrollbar{display:none}
.topnav a{white-space:nowrap;color:var(--ink-2)}
.topnav a:hover{color:var(--ink);text-decoration:underline}
.spacer{flex:1}
.chip{display:inline-flex;align-items:center;min-height:2rem;border:1px solid var(--rule-2);border-radius:99px;padding:.1rem .7rem;font-size:.82rem;white-space:nowrap}
.icon-btn{display:inline-grid;place-items:center;width:2.75rem;height:2.75rem;margin-right:-.6rem;background:none;border:0;color:var(--ink);cursor:pointer;border-radius:50%}
.icon-btn svg[hidden]{display:none}
@media (max-width:720px){.topnav{display:none}.topbar{gap:.6rem}}

/* rail */
.rail{position:fixed;right:.9rem;top:50%;transform:translateY(-50%);z-index:30;display:flex;flex-direction:column;gap:.55rem}
.rail a{display:flex;align-items:center;justify-content:flex-end;gap:.5rem;text-decoration:none;color:var(--ink-2);font-size:.8rem;min-height:24px}
.rail a span{opacity:0;transform:translateX(6px);transition:opacity .2s,transform .2s;background:var(--bg);color:var(--ink);padding:.1rem .5rem;border-radius:4px;white-space:nowrap;border:1px solid var(--rule)}
.rail a:hover span,.rail a:focus-visible span{opacity:1;transform:none}
.rail i{width:8px;height:8px;border-radius:50%;border:1.5px solid var(--ink-2);flex:none;transition:background .2s,transform .2s}
.rail a[aria-current="true"] i{background:var(--hi);border-color:var(--hi);transform:scale(1.35)}
@media (max-width:1100px){.rail{display:none}}
main{display:block}
article{max-width:1180px;margin:0 auto;padding:0 1.25rem 3rem}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.1;letter-spacing:-.005em}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem);margin:0 0 .8rem}
h3{font-size:1.35rem;margin:1.8rem 0 .4rem}
.anchor{color:inherit;text-decoration:none}
.anchor:hover{text-decoration:underline;text-decoration-thickness:1px}
.block{max-width:44rem;margin:0 auto;padding:3.2rem 0 1rem;scroll-margin-top:3.2rem}
.block.wide{max-width:none}
.block.wide>p,.block.wide>h2,.block.wide>.builder,.block.wide>.detail{max-width:44rem;margin-left:auto;margin-right:auto}
.small{font-size:.9rem;color:var(--ink-2)}
.btn{font:inherit;font-size:1rem;min-height:44px;padding:.4rem 1.1rem;border-radius:99px;border:1.5px solid var(--ink);background:var(--card);color:var(--ink);cursor:pointer}
.btn.ghost{border-color:var(--rule-2)}
.btn:hover{background:var(--ink);color:var(--bg)}
.btn[disabled]{opacity:.5;cursor:default}
.btn[disabled]:hover{background:var(--card);color:var(--ink)}

/* hero + vote */
.hero{padding-top:1.4rem;text-align:center}
.hero>*{margin-left:auto;margin-right:auto}
.kicker{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:1rem auto .6rem}
.hero h1{font-size:clamp(2.3rem,5.4vw,4.4rem);margin:0 auto .8rem;max-width:18ch}
.deck{font-size:1.2rem;color:var(--ink-2);max-width:36rem}
.vote{max-width:46rem;margin:1.4rem auto 0;background:var(--card);border:1px solid var(--rule);border-radius:14px;padding:1rem 1rem 1.2rem}
.vote[hidden]{display:none}
.vq{font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);margin:0}
.vh2{font-family:var(--display);font-size:clamp(1.4rem,3vw,2rem);margin:.3rem 0 .9rem}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.pick-o{font:600 clamp(1.25rem,3.2vw,1.9rem)/1.15 var(--display);min-height:5.2rem;border-radius:12px;border:2px solid var(--rule-2);background:var(--bg);color:var(--ink);cursor:pointer;padding:.6rem;display:grid;place-items:center;gap:.2rem}
.pick-o i{font:italic 400 .8rem var(--serif);color:var(--ink-2)}
.pick-o:hover:not([disabled]){border-color:var(--ink)}
.pick-o[disabled]{cursor:default}
.pick-o.is-right{border-color:var(--right);box-shadow:0 0 0 2px var(--right) inset}
.pick-o.is-chosen:not(.is-right){border-color:var(--wrong);border-style:dashed}
.unsure{margin-top:.7rem}
.verdict{font-family:var(--display);font-size:clamp(1.2rem,2.4vw,1.55rem);line-height:1.3;margin:.9rem 0 .3rem;text-align:left}
.verdict b{color:var(--ink)}.verdict.v-ok b{color:var(--right)}.verdict.v-no b{color:var(--wrong)}
.lessonline{text-align:left;font-size:1rem;color:var(--ink-2);border-left:3px solid var(--band);padding-left:.8rem;margin:.6rem 0}
.mini{margin:.6rem 0 0}
.vnav{display:flex;gap:.6rem;justify-content:flex-end;flex-wrap:wrap;margin-top:.8rem;align-items:center}
.vnav .score{margin-right:auto;font-size:1rem}

/* builder */
.builder{margin-top:1rem}
.builder[hidden]{display:none}
.combo{position:relative}
.combo input{font:inherit;font-size:1.1rem;width:100%;min-height:52px;padding:.4rem 1rem;border:2px solid var(--rule-2);border-radius:99px;background:var(--card);color:var(--ink)}
.combo input:focus{border-color:var(--you);outline:none;box-shadow:0 0 0 3px var(--you-soft)}
.sugg{position:absolute;left:0;right:0;top:calc(100% + 4px);z-index:20;list-style:none;margin:0;padding:.3rem;background:var(--card);border:1px solid var(--rule-2);border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.12);max-height:60vh;overflow:auto}
.sugg[hidden]{display:none}
.sugg li{padding:.55rem .8rem;border-radius:8px;cursor:pointer;min-height:44px;display:flex;align-items:baseline;gap:.5rem;flex-wrap:wrap}
.sugg li i{color:var(--ink-2);font-size:.88rem}
.sugg li[aria-selected="true"],.sugg li:hover{background:var(--you-soft)}
.sugg .none{cursor:default;color:var(--ink-2)}
.sugg .none:hover{background:none}
.presets{display:flex;flex-wrap:wrap;gap:.45rem;margin:.8rem 0 0;align-items:center}
.presets .btn{font-size:.92rem;padding:.3rem .9rem}
.chips{display:flex;flex-wrap:wrap;gap:.4rem;margin:.8rem 0 0;padding:0;list-style:none}
.chips li{display:inline-flex;align-items:center;gap:.1rem;min-height:36px;border-radius:99px;border:1.5px solid var(--rule-2);padding:0 .1rem 0 .8rem;background:var(--card);font-size:.95rem}
.chips button{border:0;background:none;color:var(--ink-2);font-size:1.2rem;cursor:pointer;min-width:40px;min-height:40px;border-radius:50%}
.chips button:hover{color:var(--ink)}
.msg{font-size:.95rem;color:var(--ink-2);margin:.6rem 0 0}
.msg:empty{display:none}

/* tree */
.treefig{margin:1.4rem auto 0;max-width:1100px}
.tree svg,.mini svg{display:block;width:100%;height:auto;overflow:visible}
.t-grid{stroke:var(--grid);stroke-width:1}
.t-ax{fill:var(--mut);font:12px var(--mono)}
.t-mark{stroke:var(--mut);stroke-width:1;stroke-dasharray:3 4}
.t-markl{fill:var(--mut);font:italic 12px var(--serif)}
.t-you{stroke:var(--you);stroke-width:4;stroke-linecap:round}
.t-youl{fill:var(--you);font:700 16px var(--serif)}
.t-line{stroke:var(--line);stroke-width:2;fill:none;stroke-linecap:round}
.t-band{fill:var(--band-soft);stroke:var(--band);stroke-width:1}
.t-bracket{fill:none;stroke:var(--band);stroke-width:1.2;stroke-dasharray:3 3}
.t-dot{fill:var(--you)}
.t-lab{fill:var(--ink);font:600 15px var(--serif)}
.t-row{cursor:pointer}
.t-row:hover .t-line,.t-row:focus .t-line,.t-row.sel .t-line{stroke:var(--ink);stroke-width:3}
.t-row:hover .t-lab,.t-row.sel .t-lab{text-decoration:underline}
.t-row:focus{outline:none}
.t-row:focus-visible .t-hit{stroke:var(--hi);stroke-width:2;fill:var(--you-soft)}
.t-hit{fill:transparent}
.t-mito .t-line{stroke:var(--you);stroke-dasharray:2 4}
.t-mito .t-band{fill:var(--you-soft);stroke:var(--you)}
.t-mito .t-lab{fill:var(--you);font-style:italic}
.grow{animation:grow .9s ease-out both}
@keyframes grow{from{stroke-dashoffset:var(--len)}to{stroke-dashoffset:0}}

/* detail */
.detail{margin-top:1rem}
.detail:empty{display:none}
.card{background:var(--card);border:1px solid var(--rule);border-radius:12px;padding:1rem 1.1rem}
.card h3{margin:0 0 .3rem;font-size:1.6rem}
.card h3 i{font:italic 400 1rem var(--serif);color:var(--ink-2)}
.card .lca{font-size:1.15rem}
.card p{margin:.5rem 0}
.card .ev,.ev{font-size:.9rem;color:var(--ink-2)}

/* junction list */
.jns{margin-top:1rem}
.jn{border-top:1px solid var(--rule);padding:.4rem 0 .6rem;scroll-margin-top:3.4rem}
.jn h3{margin:.8rem 0 .3rem;font-size:1.3rem}
.jn .when{display:block;font:500 .82rem var(--mono);letter-spacing:.04em;color:var(--band)}
.jn p{margin:.4rem 0}
.orgs{font-size:.95rem;color:var(--ink-2);margin:.4rem 0}
.orgs details{display:inline}
.orgs summary{display:inline;cursor:pointer;color:var(--link);text-decoration:underline}
.orgs details[open] summary{display:none}
.faq{margin-top:1.4rem}
.lesson li{margin:.6rem 0}

/* sources, footer */
.method{font-size:.95rem;color:var(--ink-2)}
.srcs{font-size:.88rem;color:var(--ink-2);padding-left:1.1rem}
.srcs li{margin:.35rem 0;overflow-wrap:anywhere}
.rel-h{font-size:1.1rem}
.rel{padding-left:1.1rem}
.foot{border-top:1px solid var(--rule);text-align:center;font-size:.9rem;color:var(--ink-2);padding:1.5rem 1rem 2.5rem}
.foot a{color:inherit}
.nf main{max-width:36rem;margin:15vh auto;padding:0 1.2rem}

@media (max-width:900px){body{font-size:1.05rem}.deck{font-size:1.08rem}}
@media (max-width:520px){
  article{padding:0 1rem 2rem}
  .hero{padding-top:.6rem}
  .kicker{margin-top:.6rem}
  .pick-o{min-height:4.4rem}
}
/* projector / big screens: the tree and the vote get the room */
@media (min-width:1400px){body{font-size:1.2rem}.vote{max-width:56rem}.treefig{max-width:1300px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}