@font-face{font-family:"Fraunces";font-style:normal;font-weight:100 900;font-display:swap;src:url(fonts/fraunces-normal-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:"Fraunces";font-style:normal;font-weight:100 900;font-display:swap;src:url(fonts/fraunces-normal-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:"Fraunces";font-style:italic;font-weight:100 900;font-display:swap;src:url(fonts/fraunces-italic-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:"Fraunces";font-style:italic;font-weight:100 900;font-display:swap;src:url(fonts/fraunces-italic-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:"Source Serif";font-style:normal;font-weight:200 900;font-display:swap;src:url(fonts/source-serif-4-normal-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:"Source Serif";font-style:normal;font-weight:200 900;font-display:swap;src:url(fonts/source-serif-4-normal-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:"Source Serif";font-style:italic;font-weight:200 900;font-display:swap;src:url(fonts/source-serif-4-italic-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:"Source Serif";font-style:italic;font-weight:200 900;font-display:swap;src:url(fonts/source-serif-4-italic-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:"Plex Sans";font-style:normal;font-weight:500 600;font-display:swap;src:url(fonts/IBMPlexSans-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Plex Sans";font-style:normal;font-weight:500 600;font-display:swap;src:url(fonts/IBMPlexSans-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:"Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/IBMPlexMono-400-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:"Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/IBMPlexMono-400-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}

:root{
  --display:"Fraunces",Georgia,"Times New Roman",serif;
  --text:"Source Serif",Georgia,"Times New Roman",serif;
  --ui:"Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --c-bg:#f5f1e8; --c-surface:#fbf9f3; --c-ink:#16212b; --c-muted:#56636f; --c-line:#d9d2c2;
  --c-steel:#6c7883; --c-steel2:#9aa6b0; --c-trace:#0a68a0; --c-alert:#c8281f;
  --c-ground:#ece6d8; --c-ground2:#d8d0bd; --c-gap:#e9b44c; --c-accent:#0a68a0; --c-accent-ink:#ffffff;
  --bar:3.1rem;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --c-bg:#0e151c; --c-surface:#141d26; --c-ink:#e8edf1; --c-muted:#a2afba; --c-line:#27333f;
  --c-steel:#8d9aa6; --c-steel2:#c0cad2; --c-trace:#5cc0ff; --c-alert:#ff7a6b;
  --c-ground:#111b24; --c-ground2:#1c2935; --c-gap:#e9b44c; --c-accent:#5cc0ff; --c-accent-ink:#06121b;
  color-scheme:dark;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --c-bg:#0e151c; --c-surface:#141d26; --c-ink:#e8edf1; --c-muted:#a2afba; --c-line:#27333f;
    --c-steel:#8d9aa6; --c-steel2:#c0cad2; --c-trace:#5cc0ff; --c-alert:#ff7a6b;
    --c-ground:#111b24; --c-ground2:#1c2935; --c-gap:#e9b44c; --c-accent:#5cc0ff; --c-accent-ink:#06121b;
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--c-bg);color:var(--c-ink);font:400 1.1rem/1.62 var(--text);padding-top:var(--bar);overflow-wrap:break-word}
a{color:inherit;text-decoration-color:var(--c-trace);text-underline-offset:.18em}
a:hover{color:var(--c-trace)}
:focus-visible{outline:3px solid var(--c-trace);outline-offset:2px;border-radius:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--c-ink);color:var(--c-bg);padding:.6rem 1rem;z-index:50}
.skip:focus{left:8px;top:8px}
.sr-status{position:absolute;left:-999px;width:1px;height:1px;overflow:hidden}

/* top bar */
.topbar{position:fixed;inset:0 0 auto 0;height:var(--bar);z-index:20;display:flex;align-items:center;gap:.9rem;padding:0 max(1rem,env(safe-area-inset-left));background:color-mix(in srgb,var(--c-bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--c-line);font:500 .92rem/1 var(--ui);white-space:nowrap}
.home{font-weight:600;text-decoration:none;color:var(--c-ink)}
.topnav{display:flex;gap:.9rem;overflow-x:auto;scrollbar-width:none;min-width:0;flex:1 1 auto}
.topnav::-webkit-scrollbar{display:none}
.topnav a{text-decoration:none;color:var(--c-muted);padding:.5rem 0;border-bottom:2px solid transparent}
.topnav a[aria-current]{color:var(--c-ink);border-bottom-color:var(--c-trace)}
.spacer{flex:0 0 0}
.chip-link,.chipl{font:600 .85rem/1 var(--ui);text-decoration:none;border:1px solid var(--c-line);border-radius:999px;padding:.5rem .8rem;color:var(--c-ink);min-height:36px;display:inline-flex;align-items:center}
.icon-btn{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;border:1px solid var(--c-line);background:transparent;color:var(--c-ink);cursor:pointer}
.icon-btn svg{display:block}.icon-btn svg[hidden]{display:none}

main{display:block}
.hero,.block{max-width:72rem;margin:0 auto;padding:0 max(1rem,env(safe-area-inset-left))}
.block{padding-top:3.4rem;padding-bottom:.4rem}
.block>*{max-width:42rem}
.block>.bench,.block>table.data,.block>details,.block>.curve-ui,.block>.train-in,.block>.train-out,.block>.cup-in,.block>.share-row{max-width:42rem}
section{scroll-margin-top:calc(var(--bar) + .6rem)}

h1,h2{font-family:var(--display);font-weight:620;letter-spacing:-.012em;line-height:1.12;margin:0 0 .6em;font-variation-settings:"opsz" 96,"SOFT" 30}
h1{font-size:2.15rem;font-weight:680}
h2{font-size:1.6rem}
@media (min-width:30rem){h1{font-size:2.6rem}h2{font-size:1.8rem}}
@media (min-width:48rem){h1{font-size:3.2rem}h2{font-size:2rem}}
@media (min-width:62rem){h1{font-size:3.7rem}h2{font-size:2.15rem}}
h2 .anchor{text-decoration:none;color:inherit}
.kicker{font:600 .78rem/1 var(--ui);text-transform:uppercase;letter-spacing:.14em;color:var(--c-trace);margin:0 0 .9rem}
.deck{font-size:1.28rem;line-height:1.45;margin:0 0 1rem}
p{margin:0 0 1.05em}
.small{font-size:.93rem;line-height:1.5;color:var(--c-muted)}
.mono{font-family:var(--mono)}
.warn{color:var(--c-alert);font:500 .95rem/1.4 var(--ui)}

/* hero layout */
.hero{display:grid;gap:1.2rem;padding-top:1.6rem;padding-bottom:1rem;grid-template-areas:"copy" "bench" "why"}
.hero-copy{min-width:0;grid-area:copy}
.hero .bench{grid-area:bench}
.why{grid-area:why}
.why{color:var(--c-ink);font-size:1.02rem;line-height:1.58}
@media (min-width:62rem){
  .hero{grid-template-columns:minmax(0,1fr) minmax(22rem,27rem);grid-template-rows:auto 1fr;grid-template-areas:"copy bench" "why bench";column-gap:3.2rem;row-gap:0;align-items:start;padding-top:2.6rem}
  .hero .bench{position:sticky;top:calc(var(--bar) + .8rem)}
}

/* bench */
.bench{margin:0;background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;padding:.7rem}
.bench-stage{border-radius:10px;overflow:hidden;border:1px solid var(--c-line);background:var(--c-ground)}
canvas.lane{display:block;width:100%;height:clamp(21rem,58svh,36rem);touch-action:pan-y;cursor:grab;outline-offset:3px}
canvas.lane.grab{cursor:grabbing}
.cups-stage canvas.lane,.speed-stage canvas.lane{height:clamp(17rem,44svh,24rem)}
canvas.front{display:block;width:100%;height:8.2rem;border-radius:10px;margin-top:.6rem;background:var(--c-ground)}
.bench-ctl{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;justify-content:space-between;margin-top:.7rem}
.chips{display:flex;flex-wrap:wrap;gap:.4rem}
.chip,.btn{font:600 .88rem/1.15 var(--ui);min-height:44px;padding:.55rem .85rem;border-radius:999px;border:1px solid var(--c-line);background:transparent;color:var(--c-ink);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-accent-ink)}
.btn{border-radius:10px;background:var(--c-surface)}
.btn:hover,.chip:hover{border-color:var(--c-trace)}
.pushes{display:flex;gap:.4rem}
.readout{font:500 .98rem/1.4 var(--ui);margin:.7rem 0 .2rem}
.readout strong{font-family:var(--mono);font-weight:400;font-size:1.05rem}
.bench-status{font:500 .92rem/1.4 var(--ui);color:var(--c-ink);margin:.4rem 0 .3rem;min-height:2.6em}
.legend{font:400 .8rem/1.4 var(--ui);color:var(--c-muted);margin:.3rem 0 0}
.bench.small{margin:1.2rem 0 1.4rem;max-width:27rem}
.rd-l{color:var(--c-muted)}

/* widgets */
.cup-in,.train-in{display:grid;grid-template-columns:repeat(auto-fit,minmax(9.5rem,1fr));gap:.7rem;margin:0 0 1rem}
label{font:500 .88rem/1.3 var(--ui);color:var(--c-muted);display:grid;gap:.3rem}
input[type=number],select{font:500 1rem/1.2 var(--ui);min-height:44px;padding:.5rem .7rem;border-radius:9px;border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink);width:100%}
input[type=number]:disabled{opacity:.6}
input[type=range]{width:100%;accent-color:var(--c-trace);min-height:44px}
.big-answer{font-size:1.15rem;line-height:1.5;border-left:4px solid var(--c-trace);padding:.2rem 0 .2rem .9rem}
.big-answer strong{font-family:var(--display);font-size:1.5em}
.stat{margin:.2rem 0}
.stat strong{font-family:var(--display);font-weight:640;font-size:2.6rem;letter-spacing:-.02em;line-height:1}
@media (min-width:40rem){.stat strong{font-size:3.4rem}}
.stat span{font:500 1rem var(--ui);color:var(--c-muted)}
.gauge{height:14px;border-radius:7px;background:var(--c-ground2);overflow:hidden;margin:.4rem 0 .5rem}
.gauge div{height:100%;width:0;background:var(--c-trace);border-radius:7px;transition:width .15s}
.gauge.over div{background:var(--c-alert)}
.curve-line{margin:.7rem 0 0;font:500 1rem/1.4 var(--ui)}
.speed-ctl{margin:.5rem 0 .2rem}
#spRegime[data-state="grows"]{color:var(--c-alert)}
.hide{display:none}

table.data{width:100%;border-collapse:collapse;font:400 .98rem/1.4 var(--ui);margin:1rem 0 1.2rem}
table.data caption{text-align:left;font:600 .85rem var(--ui);color:var(--c-muted);padding-bottom:.4rem}
table.data th,table.data td{padding:.5rem .6rem;border-bottom:1px solid var(--c-line);text-align:left;vertical-align:top}
table.data thead th{font:600 .8rem var(--ui);color:var(--c-muted)}
table.data tbody th{font-family:var(--mono);font-weight:400;white-space:nowrap}
details.tbl{margin:0 0 1.2rem}
details.tbl summary{font:600 .95rem var(--ui);cursor:pointer;padding:.4rem 0;min-height:44px;display:flex;align-items:center}

/* share */
.share-row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin:1.6rem 0 .5rem}
.share-label{font:500 .85rem var(--ui);color:var(--c-muted);margin-right:.3rem}
.sbtn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--c-line);background:transparent;color:var(--c-ink);cursor:pointer;text-decoration:none}
.sbtn:hover{color:var(--c-trace);border-color:var(--c-trace)}
@media (pointer:coarse){.sbtn{width:44px;height:44px}}
.sbtn[hidden]{display:none}

/* sources */
.srcs{padding-left:1.1rem;font:400 .92rem/1.5 var(--ui)}
.srcs li{margin:.35rem 0;overflow-wrap:anywhere}
.method{font:400 .96rem/1.55 var(--ui);color:var(--c-ink)}
.foot{max-width:72rem;margin:3rem auto 2rem;padding:1rem max(1rem,env(safe-area-inset-left)) 0;border-top:1px solid var(--c-line);font:400 .9rem/1.5 var(--ui);color:var(--c-muted)}
.foot a{color:inherit}
@media (max-width:30rem){
  .topbar{gap:.6rem}
  .home{font-size:.88rem}
  .topnav{gap:.7rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

.viewtog{margin:0 0 .6rem}
.viewtog .chip{min-height:40px;padding:.45rem .8rem}
.readout strong{font:600 1.05rem var(--ui)}
#frontOut{font:500 .8rem/1.4 var(--ui)}
.speed-ctl label,.curve-ui label{display:block}
.cup-fig{margin:1.2rem 0;max-width:30rem}
.cup-fig svg{width:100%;height:auto;display:block}
.cup-fig figcaption{font:400 .85rem/1.4 var(--ui);color:var(--c-muted);margin-top:.3rem}
@media (max-width:34rem){.topnav{display:none}.spacer{flex:1 1 auto}}