@font-face{font-family:"Newsreader";src:url(fonts/newsreader-latin.woff2) format("woff2");font-weight:300 700;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+20AC,U+2122,U+2191,U+2193,U+2212,U+2215}
@font-face{font-family:"Newsreader";src:url(fonts/newsreader-latin-ext.woff2) format("woff2");font-weight:300 700;font-display:swap;unicode-range:U+0100-024F,U+0259,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Newsreader";font-style:italic;src:url(fonts/newsreader-italic-400-latin.woff2) format("woff2");font-weight:400;font-display:swap;unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:"Newsreader";font-style:italic;src:url(fonts/newsreader-italic-400-latin-ext.woff2) format("woff2");font-weight:400;font-display:swap;unicode-range:U+0100-024F,U+1E00-1EFF}
@font-face{font-family:"Plex";src:url(fonts/IBMPlexSans-latin.woff2) format("woff2");font-weight:300 700;font-display:swap;unicode-range:U+0000-00FF,U+2000-206F,U+2190-21FF,U+2212}
@font-face{font-family:"Plex";src:url(fonts/IBMPlexSans-latin-ext.woff2) format("woff2");font-weight:300 700;font-display:swap;unicode-range:U+0100-024F,U+1E00-1EFF}

:root{
  --bg:#f5f0e6;--card:#fffcf6;--fg:#1c1915;--mut:#4a4339;--line:#cbc1b0;--line-soft:#e3dbcc;
  --seal:#b3301b;--ink:#1c1915;--seal-ink:#8a2212;--ghost:#7d7365;--band:#e6dccb;--ok:#1f5e45;--sea:#e4ece9;--land:#ece4d4;--land-on:#e2cfa8;--top:52px;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;--sans:"Plex",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#14120f;--card:#1c1915;--fg:#f0e9dd;--mut:#c4baa9;--line:#3d372e;--line-soft:#2a2620;
  --seal:#f2694a;--ink:#f0e9dd;--seal-ink:#ff9c80;--ghost:#9a8f7f;--band:#2b2721;--ok:#7fd1ab;--sea:#141a19;--land:#26221c;--land-on:#4a3b25;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#14120f;--card:#1c1915;--fg:#f0e9dd;--mut:#c4baa9;--line:#3d372e;--line-soft:#2a2620;
  --seal:#f2694a;--ink:#f0e9dd;--seal-ink:#ff9c80;--ghost:#9a8f7f;--band:#2b2721;--ok:#7fd1ab;--sea:#141a19;--land:#26221c;--land-on:#4a3b25;color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--top) + 12px)}
body{margin:0;background:var(--bg);color:var(--fg);font:400 1.125rem/1.6 var(--serif);overflow-x:hidden}
a{color:var(--seal-ink);text-underline-offset:.15em}
.skip-link{position:absolute;left:-999px;top:0;background:var(--card);color:var(--fg);padding:.5rem 1rem;z-index:99}
.skip-link:focus{left:.5rem}
:focus-visible{outline:2px solid var(--seal-ink);outline-offset:2px}

.topbar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 94%,transparent);height:calc(var(--top) + var(--browser-safe-top,env(safe-area-inset-top)));padding:var(--browser-safe-top,env(safe-area-inset-top)) .9rem 0;display:flex;align-items:center;gap:.55rem;border-bottom:1px solid var(--line-soft);font:400 .9rem/1 var(--sans)}
.topbar a{color:inherit;text-decoration:none}
.brand{display:flex;align-items:center;gap:.45rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.brand svg{width:22px;height:22px;flex:none;color:var(--seal)}
.spacer{flex:1}
.chip{font:500 .75rem/1 var(--sans);padding:.4rem .55rem;border:1px solid var(--line);border-radius:99px;min-height:32px;display:inline-flex;align-items:center}
.chip[aria-current=page]{border-color:var(--fg)}
.icon-btn{background:none;color:var(--fg);border:1px solid var(--line);border-radius:99px;width:34px;height:34px;display:grid;place-items:center;cursor:pointer;flex:none}
.i-moon{display:none}[data-theme="dark"] .i-sun{display:none}[data-theme="dark"] .i-moon{display:block}

main{padding:0 16px}
.col{max-width:41rem;margin:0 auto}
.wide{max-width:58rem;margin:0 auto}
.opening{padding:2.2rem 0 1rem}
.kicker{font:500 .78rem/1.3 var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--mut);margin:0 0 .7rem}
h1{font:500 clamp(2.05rem,6vw,3.3rem)/1.06 var(--serif);letter-spacing:-.015em;margin:0 0 1rem;text-wrap:balance}
.deck{font-size:1.24rem;line-height:1.5;color:var(--fg);margin:0 0 .4rem}
h2{font:500 clamp(1.55rem,4.2vw,2.1rem)/1.15 var(--serif);margin:3.2rem 0 .8rem;text-wrap:balance}
h3{font:600 1rem/1.3 var(--sans);margin:1.6rem 0 .4rem}
p{margin:0 0 1rem}
.mut{color:var(--mut)}
.small{font:400 .9rem/1.5 var(--sans);color:var(--mut)}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* instrument */
.instrument{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;margin:1.3rem 0 0}
.stage{display:flex;flex-direction:column;align-items:center;gap:.4rem;margin:0 0 12px}
.glyph{font:600 clamp(3.6rem,min(22vw,13vh),8rem)/1 var(--serif);color:var(--fg);min-height:1.05em;transition:color .12s}
[data-state="idle"] .glyph{color:var(--ghost)}
.prog{display:flex;align-items:center;gap:.6rem;width:100%;max-width:26rem;font:400 .82rem/1 var(--sans);color:var(--mut);font-variant-numeric:tabular-nums}
.prog .bar{flex:1;height:5px;border-radius:9px;background:var(--line-soft);overflow:hidden}
.prog .bar span{display:block;height:100%;width:0;background:var(--seal);transition:width .2s}
.picker{display:flex;gap:8px;touch-action:manipulation}
.picker canvas{display:block;border-radius:10px;cursor:crosshair;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
[data-state="idle"] .picker,[data-state="done"] .picker{opacity:.4;pointer-events:none}
.sat{display:flex;align-items:center;gap:.7rem;font:400 .85rem/1 var(--sans);color:var(--mut);margin:.7rem 0 .2rem}
.sat input{flex:1;accent-color:var(--seal)}
.inst-row{display:flex;gap:.5rem;align-items:center;margin:.5rem 0 .2rem;flex-wrap:wrap}
.spacer{flex:1}
.hint{font:400 .88rem/1.45 var(--sans);color:var(--mut);margin:.7rem 0 0}
.btn{font:500 .9rem/1 var(--sans);color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:99px;padding:.65rem 1.1rem;min-height:44px;cursor:pointer}
.btn:hover{border-color:var(--fg)}
.btn.primary{background:var(--seal);border-color:var(--seal);color:#fff}
[data-theme="dark"] .btn.primary{color:#1a0d08}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn.primary{color:#1a0d08}}
.btn[disabled]{opacity:.45;cursor:default}
.privacy{font:400 .82rem/1.45 var(--sans);color:var(--mut);margin:.6rem 0 0}

/* results */
.result-none{border:1px dashed var(--line);border-radius:12px;padding:1rem;font:400 .95rem/1.5 var(--sans);color:var(--mut)}
.poster{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:2px 6px;background:#f5f0e6;border:1px solid var(--line);border-radius:18px;padding:18px 16px;margin:1rem 0 0;text-align:center}
.pg{font:600 3.4rem/1.15 var(--serif);-webkit-text-stroke:1px rgba(28,25,21,.32);paint-order:stroke fill}
.pg.nil,.lg.nil{color:transparent;-webkit-text-stroke:1.2px #b9b0a2}
.share-row{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0 0}
.fact{border-top:1px solid var(--line-soft);padding:.9rem 0 .2rem;margin-top:1rem}
.fact h3,.letters-you h3{font:600 .78rem/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--mut);margin:0 0 .6rem}
.fact p{font-size:1.06rem;margin:0 0 .6rem}
.fact b{font-weight:600;color:var(--seal-ink)}
svg.scale{display:block;width:100%;max-width:640px;height:auto;margin:.3rem 0 .6rem;overflow:visible}
svg.scale .syn{fill:var(--seal);opacity:.85}svg.scale .mid{fill:var(--seal);opacity:.35}svg.scale .rest{fill:var(--line)}
svg.scale text{font:400 13px var(--sans);fill:var(--mut)}
svg.scale line.me{stroke:var(--fg);stroke-width:2.5}svg.scale circle.me{fill:var(--fg)}
.letters-you{margin:1.4rem auto 0;max-width:58rem}
.lgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:4px 14px;padding:0 0 .4rem}
.lrow{display:flex;align-items:center;gap:.6rem;background:#f5f0e6;border-radius:10px;padding:2px 10px}
.lg{font:600 2rem/1.2 var(--serif);min-width:1.3em;text-align:center;-webkit-text-stroke:1px rgba(28,25,21,.32);paint-order:stroke fill}
.lt{font:400 .82rem/1.3 var(--sans);color:#4a4339;display:flex;flex-direction:column}
.lt b{color:#1c1915;font-weight:600}

/* static figures */
.spectrum{margin:1.2rem auto 0;max-width:58rem}
canvas.spec{display:block;width:100%}
.magnets{font:600 2.1rem/1.2 var(--serif);-webkit-text-stroke:1px rgba(28,25,21,.25);letter-spacing:.06em;background:#f5f0e6;border-radius:12px;padding:.4rem .7rem;word-break:break-all}
.chart{margin:1.2rem 0}
.chart svg{display:block;width:100%;height:auto;overflow:visible}
.chart text{font:400 14px var(--sans);fill:var(--mut)}
.chart .grid{stroke:var(--line-soft)}
.chart .bar{fill:var(--seal)}
.chart .toy{fill:var(--band);opacity:.8}
.chart .toyl{font-size:13px;fill:var(--fg)}
.note{font:400 .88rem/1.5 var(--sans);color:var(--mut);margin:.4rem 0 0}

#limite ul,.method ul{padding-left:1.2rem}
#limite li{margin:0 0 .6rem}
.method{font-size:1rem}
.method li{margin:0 0 .5rem}
.sources{font:400 .9rem/1.5 var(--sans)}
.sources li{margin:0 0 .45rem}
.site-footer{max-width:41rem;margin:3.5rem auto 0;padding:1.4rem 16px 3rem;border-top:1px solid var(--line-soft);display:flex;gap:1.2rem;flex-wrap:wrap;font:400 .85rem var(--sans);color:var(--mut)}
.site-footer a{color:inherit}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}