@font-face{font-family:"Newsreader";font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/newsreader-latin.woff2) format("woff2");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:"Newsreader";font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/newsreader-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Newsreader";font-style:italic;font-weight:400;font-display:swap;src:url(fonts/newsreader-italic-400-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:"Newsreader";font-style:italic;font-weight:400;font-display:swap;src:url(fonts/newsreader-italic-400-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+1E00-1E9F}
@font-face{font-family:"NumSerif";font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/newsreader-latin.woff2) format("woff2");unicode-range:U+0030-0039}
@font-face{font-family:"Atkinson";font-style:normal;font-weight:200 800;font-display:swap;src:url(fonts/AtkinsonHyperlegibleNext.woff2) format("woff2")}

:root{
  --bg:#f4efe4;--bg2:#ebe3d1;--card:#fbf8f0;--ink:#1d1a14;--ink2:#3d372b;--muted:#4a4435;
  --line:#cdc3ac;--line-soft:#ddd4bd;--accent:#772f0c;--accent-ink:#fff;--plate:#efe9d8;
  --silhouette:#2a251c;--cover:#3a3025;--pl-bg:#ece4d0;--pl-bld:#cfc2a3;--pl-bldline:#b3a483;--pl-park:#cbd4b0;--pl-area:#f3ecd9;--pl-road:#fbf7ec;--water:#134a72;--t-silt:#5b4a35;--t-silt2:#8a7456;--t-silt3:#c0a97a;--gapfill:rgba(40,30,18,.14);--gaphatch:rgba(60,44,26,.55);
  --t-ground:#7a6244;--t-pebble1:#b9ab8c;--t-pebble2:#8e8167;--t-pebble3:#6c6150;--t-brick:#a2573a;
  --t-clay:#6d808c;--t-clay2:#52646f;--t-clay3:#92a4af;--t-mott:#a98c6b;--t-mott2:#b9674f;--t-mott3:#8d9486;--t-mott4:#c8b48a;
  --t-conglom:#9b8a6c;--t-flint:#25272b;--t-sand:#dcc48b;--t-sand2:#c4a865;--t-sand3:#f0deae;--t-chalk:#f2efe4;--t-chalk2:#b9b5a3;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;--sans:"NumSerif","Atkinson",system-ui,-apple-system,sans-serif;
  --bar:3rem;color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#100e0b;--bg2:#17140f;--card:#1a1712;--ink:#efe8d8;--ink2:#d3cbb7;--muted:#b4ac98;
  --line:#322d24;--line-soft:#25211a;--accent:#e9a35f;--accent-ink:#1b1000;--plate:#14110d;
  --silhouette:#a39b86;--cover:#221d16;--pl-bg:#15120e;--pl-bld:#2a241b;--pl-bldline:#3a3225;--pl-park:#1f2619;--pl-area:#1d1913;--pl-road:#2d281f;--water:#78bdee;--t-silt:#3f3324;--t-silt2:#6a583d;--t-silt3:#a08a5e;--gapfill:rgba(230,215,180,.07);--gaphatch:rgba(225,208,170,.42);
  --t-ground:#5b4731;--t-pebble1:#92866e;--t-pebble2:#6f6552;--t-pebble3:#554c3e;--t-brick:#8a4b33;
  --t-clay:#4d606c;--t-clay2:#3a4a54;--t-clay3:#6f838f;--t-mott:#8a7255;--t-mott2:#9a5440;--t-mott3:#6f766a;--t-mott4:#a89670;
  --t-conglom:#7c6e55;--t-flint:#15171a;--t-sand:#b9a370;--t-sand2:#9e8750;--t-sand3:#d8c690;--t-chalk:#d9d6c8;--t-chalk2:#9d9988;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#100e0b;--bg2:#17140f;--card:#1a1712;--ink:#efe8d8;--ink2:#d3cbb7;--muted:#b4ac98;
  --line:#322d24;--line-soft:#25211a;--accent:#e9a35f;--accent-ink:#1b1000;--plate:#14110d;
  --silhouette:#a39b86;--cover:#221d16;--pl-bg:#15120e;--pl-bld:#2a241b;--pl-bldline:#3a3225;--pl-park:#1f2619;--pl-area:#1d1913;--pl-road:#2d281f;--water:#78bdee;--t-silt:#3f3324;--t-silt2:#6a583d;--t-silt3:#a08a5e;--gapfill:rgba(230,215,180,.07);--gaphatch:rgba(225,208,170,.42);
  --t-ground:#5b4731;--t-pebble1:#92866e;--t-pebble2:#6f6552;--t-pebble3:#554c3e;--t-brick:#8a4b33;
  --t-clay:#4d606c;--t-clay2:#3a4a54;--t-clay3:#6f838f;--t-mott:#8a7255;--t-mott2:#9a5440;--t-mott3:#6f766a;--t-mott4:#a89670;
  --t-conglom:#7c6e55;--t-flint:#15171a;--t-sand:#b9a370;--t-sand2:#9e8750;--t-sand3:#d8c690;--t-chalk:#d9d6c8;--t-chalk2:#9d9988;color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.08rem/1.62 var(--serif);text-rendering:optimizeLegibility;font-variant-numeric:lining-nums}
a{color:var(--accent);text-underline-offset:.15em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:0;background:var(--card);padding:.5rem 1rem;z-index:60}
.skip:focus{left:8px;top:8px}
section{scroll-margin-top:calc(var(--bar) + 8px)}
h1,h2,h3{font-family:var(--serif);line-height:1.15;margin:0;text-wrap:balance}
button,select,input{font:inherit}
.num{font-variant-numeric:tabular-nums lining-nums}

.topbar{position:sticky;top:0;z-index:40;height:var(--bar);display:flex;align-items:center;gap:.7rem;padding:0 max(16px,env(safe-area-inset-left));
  background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-soft);font:500 .9rem/1 var(--sans)}
.home{display:inline-flex;align-items:center;gap:.4rem;color:var(--ink);text-decoration:none;white-space:nowrap;font-weight:700}
.home-ico{color:var(--accent)}
.topnav{display:flex;gap:.9rem;overflow-x:auto;scrollbar-width:none;min-width:0;flex:0 1 auto}
.topnav::-webkit-scrollbar{display:none}
.topnav a{color:var(--ink2);text-decoration:none;white-space:nowrap;padding:.9rem .1rem}
.topnav a:hover,.topnav a[aria-current="true"]{color:var(--accent)}
.spacer{flex:1}
.chip{display:inline-flex;align-items:center;min-height:32px;padding:0 .7rem;border:1px solid var(--line);border-radius:999px;color:var(--ink);text-decoration:none;font-weight:600}
.icon-btn{width:34px;height:34px;display:inline-grid;place-items:center;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);cursor:pointer}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.progress span{display:block;height:100%;width:100%;transform-origin:left;transform:scaleX(0);background:var(--accent)}
@media (max-width:760px){.topnav{display:none}}
@media (pointer:coarse){.chip,.icon-btn{min-height:44px;min-width:44px}.icon-btn{width:44px;height:44px}}

main{display:block}
.s{max-width:46rem;margin:0 auto;padding:3.4rem 16px 0}
.s.wide{max-width:60rem}
.s h2{font-size:clamp(1.55rem,4.4vw,2.1rem);margin-bottom:1rem}
.s h2 .anchor{color:inherit;text-decoration:none}
.s h2 .anchor:hover{text-decoration:underline}
.s h3{font-size:1.2rem;margin:1.6rem 0 .5rem}
.s p{margin:.85rem 0}
.s.wide>p{max-width:46rem;margin-left:auto;margin-right:auto}
.note{font:400 .88rem/1.45 var(--sans);color:var(--muted)}
.status{font:500 .95rem/1.4 var(--sans);color:var(--ink2);min-height:1.4em;margin:.5rem 0}
blockquote{margin:1.2rem 0;padding:.2rem 0 .2rem 1rem;border-left:3px solid var(--accent);color:var(--ink2);font-style:italic}
.tag{display:inline-block;font:700 .72rem/1 var(--sans);letter-spacing:.04em;text-transform:uppercase;padding:.28rem .45rem;border-radius:4px;border:1px solid var(--line);color:var(--ink2);white-space:nowrap}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;padding:0 1rem;border:1px solid var(--accent);border-radius:999px;background:var(--accent);color:var(--accent-ink);font:700 .95rem/1 var(--sans);cursor:pointer}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.small{min-height:40px;padding:0 .85rem;font-size:.9rem}
.btn:hover{filter:brightness(1.08)}
.seg{display:flex;flex-wrap:wrap;gap:.4rem}
.seg button{min-height:40px;padding:0 .8rem;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);font:600 .86rem/1.1 var(--sans);cursor:pointer;text-align:left}
.seg button[aria-pressed="true"]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,transparent)}
@media (pointer:coarse){.seg button,.btn.small{min-height:44px}}

.hero{max-width:78rem;margin:0 auto;padding:1.4rem 16px 0;display:grid;gap:.6rem 2rem;grid-template-columns:minmax(0,1fr) 19rem minmax(0,.86fr);grid-template-areas:"head plate side";align-items:start}
.head{grid-area:head}
.kicker{font:700 .78rem/1.2 var(--sans);letter-spacing:.09em;text-transform:uppercase;color:var(--accent);margin:0 0 .5rem}
.hero h1{font-size:clamp(1.6rem,5vw,2.6rem);letter-spacing:-.01em}
.deck{font-size:1.14rem;color:var(--ink2);margin:.8rem 0 .4rem}
.side{grid-area:side}
.plate{grid-area:plate;position:sticky;top:calc(var(--bar) + 10px);align-self:start;background:var(--plate);border:1px solid var(--line);border-radius:10px;padding:.3rem;user-select:none;-webkit-user-select:none}
.plate .gwrap{position:relative;border-radius:6px;cursor:ns-resize}
.plate canvas{display:block;width:100%;height:min(82vh,660px)}
.gwrap:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.plate .hint{margin:.3rem .2rem .1rem;text-align:center;font:500 .76rem/1.3 var(--sans);color:var(--muted)}
.read{margin:.5rem 0 .2rem;padding:.7rem .9rem;border:1px solid var(--line);border-radius:10px;background:var(--card)}
.read .row{display:flex;align-items:baseline;gap:.5rem;flex-wrap:wrap}
.read .big{font:700 clamp(2.4rem,8vw,3.3rem)/1 var(--serif);margin:0;color:var(--ink)}
.read .unit{font:600 .98rem/1.25 var(--sans);color:var(--ink2)}
.read .ft{font:500 .92rem/1.2 var(--sans);color:var(--muted)}
.read .lay{font:700 1.05rem/1.3 var(--serif);margin:.55rem 0 0;color:var(--ink)}
.read .age{font:600 .86rem/1.3 var(--sans);color:var(--accent);margin:.1rem 0 0}
.read .txt{font:400 .96rem/1.5 var(--sans);color:var(--ink2);margin:.45rem 0 0}
.read .cmp{font:500 .86rem/1.4 var(--sans);color:var(--muted);margin:.4rem 0 0;min-height:1.2em}
.ctlrow{display:flex;flex-wrap:wrap;gap:.5rem .9rem;align-items:center;margin:.7rem 0 0}
.lab{font:700 .78rem/1.2 var(--sans);letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.legend{list-style:none;margin:.7rem 0 0;padding:0;display:grid;gap:.25rem}
.legend button{display:flex;align-items:center;gap:.6rem;width:100%;min-height:40px;padding:.2rem .6rem;border:1px solid var(--line-soft);border-radius:8px;background:transparent;color:var(--ink);font:600 .88rem/1.25 var(--sans);cursor:pointer;text-align:left}
.legend button[aria-current="true"]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent)}
.legend i{flex:none;width:18px;height:18px;border-radius:4px;border:1px solid var(--line)}
.legend small{margin-left:auto;font:500 .78rem/1 var(--sans);color:var(--muted);white-space:nowrap}
.sw-ground{background:var(--t-ground)}.sw-clay{background:var(--t-clay)}.sw-mott{background:var(--t-mott)}.sw-sand{background:var(--t-sand)}.sw-chalk{background:var(--t-chalk)}
#dg-find{margin:.8rem 0 0;border:1px solid var(--accent);border-radius:10px;background:var(--card);padding:.5rem}
#dg-find img{display:block;width:100%;height:auto;border-radius:6px}
#dg-find figcaption{font:400 .86rem/1.45 var(--sans);color:var(--ink2);margin-top:.4rem}
@media (max-width:1039px){.hero{grid-template-columns:minmax(220px,19rem) minmax(0,1fr);grid-template-areas:"head head" "plate side"}}
@media (max-width:760px){
  .hero{grid-template-columns:150px minmax(0,1fr);grid-template-areas:"head head" "plate side";gap:.6rem 1rem;padding-top:1rem}
  .deck{font-size:1.02rem}
  .read{padding:.55rem .7rem}
  .plate canvas{height:min(74vh,560px)}
  .plate .hint{font-size:.68rem}
  .read .txt{font-size:.9rem}
  .legend small{display:none}
  .seg button{width:100%}
  #dg-stage{flex-direction:column}
}

.figrow{display:flex;flex-wrap:wrap;gap:1rem;align-items:flex-start;margin:1.4rem 0}
.fig{margin:0;flex:1 1 15rem;min-width:0}
.fig img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:var(--plate)}
.fig figcaption{font:400 .86rem/1.45 var(--sans);color:var(--muted);margin-top:.4rem}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px;margin:1rem 0}
table{border-collapse:collapse;width:100%;font:400 .94rem/1.4 var(--sans)}
th,td{padding:.5rem .7rem;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top}
th{font-weight:700;background:var(--bg2)}
td.n,th.n{text-align:right;font-variant-numeric:tabular-nums lining-nums}
tr:last-child td{border-bottom:0}
.gapbox{display:grid;grid-template-columns:minmax(150px,17rem) minmax(0,1fr);gap:1rem 2rem;align-items:start;margin:1.2rem 0}
.gapbox canvas{display:block;width:100%;height:min(76vh,600px);border:1px solid var(--line);border-radius:8px;background:var(--plate)}
.gapside .big{font:700 clamp(2rem,6vw,2.8rem)/1.05 var(--serif);margin:.2rem 0}
.range{width:100%;accent-color:var(--accent);min-height:44px}
@media (max-width:620px){.gapbox{grid-template-columns:130px minmax(0,1fr);gap:.8rem}}
.stops{list-style:none;margin:1rem 0;padding:0;display:grid;gap:.8rem}
.stops li{border:1px solid var(--line);border-radius:10px;background:var(--card);padding:.7rem .9rem}
.stops h3{margin:0 0 .3rem;font-size:1.08rem}
.stops p{margin:.3rem 0;font:400 .96rem/1.5 var(--sans);color:var(--ink2)}
.stops .where{font:600 .84rem/1.4 var(--sans);color:var(--muted)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;max-width:46rem;margin:3rem auto 0;padding:0 16px}
.share-label{font:500 .9rem/1 var(--sans);color:var(--muted);margin-right:.3rem}
.sh{width:40px;height:40px;display:inline-grid;place-items:center;border:1px solid var(--line-soft);border-radius:999px;background:transparent;color:var(--ink);cursor:pointer;text-decoration:none}
.sh:hover,.sh:focus-visible{color:var(--accent);border-color:var(--accent)}
@media (pointer:coarse){.sh{width:44px;height:44px}}
.copied{flex-basis:100%;font:500 .86rem/1.3 var(--sans);color:var(--ink2);min-height:1.2em;margin:0}
.src{font:400 .93rem/1.5 var(--sans)}
.src li{margin:.45rem 0}
.foot{max-width:46rem;margin:3rem auto 0;padding:1.4rem 16px 3rem;border-top:1px solid var(--line-soft);font:400 .9rem/1.5 var(--sans);color:var(--muted)}
.foot p{margin:.3rem 0}
#totop{position:fixed;right:max(14px,env(safe-area-inset-right));bottom:max(14px,env(safe-area-inset-bottom))}
.nf{display:grid;place-items:center;min-height:100vh;text-align:center;padding:1rem}

.herofig{margin:1rem 0 0}
.herofig img{display:block;width:100%;height:auto;border-radius:10px;background:#000;border:1px solid var(--line)}
.herofig figcaption{font:400 .82rem/1.45 var(--sans);color:var(--muted);margin-top:.35rem}
.read .mark{color:var(--ink);border-left:3px solid var(--accent);padding-left:.6rem;font-weight:500}
.logtable{margin:.8rem 0 0}
.logtable summary{cursor:pointer;font:600 .9rem/1.3 var(--sans);color:var(--accent);min-height:44px;display:flex;align-items:center}
.gwrap2{position:relative}
.gwrap2 canvas{display:block;width:100%;height:min(76vh,600px);border:1px solid var(--line);border-radius:8px;background:var(--plate)}
.gapside .big{font:700 clamp(1.8rem,5vw,2.4rem)/1.05 var(--serif);margin:.2rem 0;color:var(--ink)}
.gapside .big2{font:700 1.15rem/1.3 var(--serif);color:var(--accent);margin-bottom:.2rem}
.seebox{border:1px solid var(--line);border-radius:10px;background:var(--plate);padding:.6rem;margin:1rem 0;max-width:46rem;margin-left:auto;margin-right:auto}
.plan{display:block;width:100%;height:auto;color:var(--ink)}
.pl-soft{fill:currentColor;opacity:.7;font-family:var(--sans)}
.pl-t{fill:var(--ink);font-family:var(--sans);font-weight:600}
.pl-well{fill:var(--water);stroke:var(--ink);stroke-width:1.5}
.pl-find{fill:var(--accent);stroke:var(--ink);stroke-width:1.5}
.pl-pin{fill:var(--card);stroke:var(--accent);stroke-width:2.5}
.pl-pin-t{fill:var(--ink);font-family:var(--sans)}
.stops{max-width:46rem;margin-left:auto;margin-right:auto}
.s.wide .tablewrap,.s.wide .figrow,.s.wide .gapbox{max-width:60rem}
.s.wide .tablewrap{max-width:46rem;margin-left:auto;margin-right:auto}
.s.wide .figrow{max-width:46rem;margin-left:auto;margin-right:auto}
.fig.narrow{flex:0 1 10rem}
@media (max-width:560px){.fig.narrow{flex:1 1 100%;max-width:14rem}}
@media (max-width:760px){.hero .herofig{margin-top:.7rem}}
.pl-bg{fill:var(--pl-bg)}
.pl-bld{fill:var(--pl-bld);stroke:var(--pl-bldline);stroke-width:1}
.pl-park{fill:var(--pl-park)}
.pl-area{fill:var(--pl-area);stroke:none}
.pl-major{fill:none;stroke:var(--pl-road);stroke-width:13;stroke-linecap:round;stroke-linejoin:round}
.pl-minor{fill:none;stroke:var(--pl-road);stroke-width:7;stroke-linecap:round;stroke-linejoin:round}
.pl-foot{fill:none;stroke:var(--pl-road);stroke-width:2.5;stroke-linecap:round;stroke-dasharray:1 5}
.pl-halo{paint-order:stroke;stroke:var(--pl-bg);stroke-width:6;stroke-linejoin:round}
.layernotes p{font:400 .9rem/1.5 var(--sans);color:var(--ink2);margin:.5rem 0}
.gwrap .pulse{position:absolute;width:44px;height:44px;margin:-22px 0 0 -22px;border:2px solid var(--accent);border-radius:50%;pointer-events:none;animation:pulse 2.2s ease-out infinite}
@keyframes pulse{0%{transform:scale(.6);opacity:.9}100%{transform:scale(1.7);opacity:0}}
@media (prefers-reduced-motion:reduce){.gwrap .pulse{animation:none;opacity:.6}}
.pl-st{fill:var(--ink2);font-family:var(--sans);font-weight:600;letter-spacing:.02em}
.pl-b{font-weight:700;fill:var(--ink)}
.pl-col{fill:var(--ink);stroke:var(--pl-bg);stroke-width:3}
.plankey{list-style:none;margin:.6rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.3rem 1rem;font:500 .84rem/1.3 var(--sans);color:var(--ink2)}
.plankey b{display:inline-grid;place-items:center;width:1.4em;height:1.4em;border-radius:50%;border:2px solid var(--accent);background:var(--card);color:var(--ink);font-size:.82em;margin-right:.3em}
@media (max-width:560px){
  .herofig img{aspect-ratio:2.1/1;object-fit:cover;object-position:50% 30%}
  .herofig figcaption{font-size:.74rem}
  .deck{font-size:.98rem;line-height:1.5}
}
.credit{display:inline}.credit summary{display:inline;cursor:pointer;color:var(--accent);font-weight:600}.credit[open] summary{display:block;margin-top:.3rem}