@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:"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}
@font-face{font-family:"Plex Mono";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/IBMPlexMono-600-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:600;font-display:swap;src:url(fonts/IBMPlexMono-600-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{
  --bg:#f3ede1;--bg2:#ebe3d3;--card:#fbf7ee;--ink:#17151c;--ink2:#35313c;--muted:#4a4553;
  --line:#b9ad94;--line-soft:#d6cbb2;--accent:#7a2909;--accent-ink:#fff;--cool:#2c3f8a;--alarm:#7a2909;
  --glass:rgba(251,247,238,.94);--glass-ink:#17151c;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;--mono:"Plex Mono",ui-monospace,Menlo,monospace;
  --bar:3rem;color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0c0d1f;--bg2:#12142b;--card:#171a36;--ink:#efe9dc;--ink2:#d6cebf;--muted:#b6b2c4;
  --line:#3a3f6e;--line-soft:#262a52;--accent:#ffc66b;--accent-ink:#1c1203;--cool:#aeb9ff;--alarm:#ff9a78;
  --glass:rgba(12,14,34,.92);--glass-ink:#efe9dc;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0c0d1f;--bg2:#12142b;--card:#171a36;--ink:#efe9dc;--ink2:#d6cebf;--muted:#b6b2c4;
  --line:#3a3f6e;--line-soft:#262a52;--accent:#ffc66b;--accent-ink:#1c1203;--cool:#aeb9ff;--alarm:#ff9a78;
  --glass:rgba(12,14,34,.92);--glass-ink:#efe9dc;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 1.1rem/1.62 var(--serif);font-optical-sizing:auto;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:var(--accent);text-underline-offset:.16em;text-decoration-thickness:1px}
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:80}
.skip:focus{left:8px;top:8px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
section,.step{scroll-margin-top:calc(var(--bar) + 8px)}
h1,h2,h3{font-family:var(--serif);line-height:1.1;margin:0;text-wrap:balance;font-optical-sizing:auto}
button,select,input{font:inherit}
p{margin:0 0 1em}
.wrap{max-width:46rem;margin:0 auto;padding:0 max(16px,env(safe-area-inset-left))}
.wide{max-width:72rem}

/* top bar */
.topbar{position:sticky;top:0;z-index:50;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) 82%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line-soft);font:500 .86rem/1 var(--mono)}
.home{display:inline-flex;align-items:center;gap:.45rem;color:var(--ink);text-decoration:none;white-space:nowrap;font-weight:600}
.home-ico{color:var(--accent)}
.topnav{display:flex;gap:1rem;overflow-x:auto;scrollbar-width:none;min-width:0;flex:0 1 auto;margin-left:.6rem}
.topnav::-webkit-scrollbar{display:none}
.topnav a{color:var(--ink2);text-decoration:none;white-space:nowrap;padding:.95rem .1rem}
.topnav a:hover{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)}
.progress i{position:absolute;top:-6px;left:0;width:14px;height:14px;margin-left:-7px;will-change:transform;color:var(--accent)}
.progress i svg{display:block}
@media (max-width:820px){.topnav{display:none}}
@media (pointer:coarse){.chip,.icon-btn{min-height:44px;min-width:44px}.icon-btn{width:44px;height:44px}}

/* hero: always a dark photographic scene, in both themes */
.hero{position:relative;min-height:calc(100svh - var(--bar));display:flex;align-items:flex-end;overflow:hidden;background:#3d4380;color:#f6f1e6;isolation:isolate}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:62% 30%;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:
  linear-gradient(180deg,rgba(8,8,26,.2) 0%,rgba(8,8,26,.35) 28%,rgba(8,8,26,.72) 52%,rgba(8,8,26,.94) 78%,rgba(8,8,26,.97) 100%),
  linear-gradient(90deg,rgba(8,8,26,.88) 0%,rgba(8,8,26,.62) 42%,rgba(8,8,26,0) 78%)}
.hero-in{width:100%;max-width:72rem;margin:0 auto;padding:0 max(16px,env(safe-area-inset-left)) clamp(1.4rem,5vh,3.2rem)}
.kicker{display:inline-block;font:600 .78rem/1.3 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:#ffe3a8;background:rgba(8,8,26,.74);padding:.3rem .6rem;border-radius:6px;margin:0 0 1rem}
h1{font-weight:300;font-size:clamp(2.4rem,7.6vw,5.6rem);letter-spacing:-.022em;line-height:1.0;max-width:13ch;font-variation-settings:"opsz" 144;text-shadow:0 2px 24px rgba(0,0,20,.55)}
.deck{font-size:clamp(1.08rem,2.2vw,1.42rem);line-height:1.42;max-width:35rem;margin:1.2rem 0 0;color:#efe9dc;font-weight:350;text-shadow:0 1px 14px rgba(0,0,20,.7)}
.cue-row{display:flex;flex-wrap:wrap;align-items:center;gap:.9rem 1.4rem;margin-top:1.6rem}
.cue-btn{display:inline-flex;align-items:center;gap:.6rem;min-height:48px;padding:.5rem 1.3rem;border-radius:999px;background:#ffc66b;color:#1c1203;font:600 .95rem/1 var(--mono);text-decoration:none;letter-spacing:.02em}
.cue-btn:hover{background:#ffd78f}
.hero-credit{position:absolute;right:max(16px,env(safe-area-inset-right));top:.7rem;margin:0;font:500 .72rem/1.35 var(--mono);color:#f4efe4;max-width:16rem;text-align:right;background:rgba(8,8,26,.82);padding:.35rem .6rem;border-radius:8px}
.hero-credit a{color:#ffe0a8}
.hero .share-row{--ink:#f6f1e6;--line:rgba(246,241,230,.5);--accent:#ffd48a}
@media (max-width:640px){.hero .share-label{display:none}.hero{min-height:calc(100svh - var(--bar));align-items:flex-end}.hero-img{object-position:68% 18%}.hero-credit{display:none}}

/* share */
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.share-label{font:500 .78rem/1 var(--mono);color:inherit;opacity:.85;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}
.hero .sh{border-color:rgba(246,241,230,.5);color:#f6f1e6}
.sh:hover{border-color:var(--accent);color:var(--accent)}
@media (pointer:coarse){.sh{width:44px;height:44px}}
.copied{margin:0;font:500 .8rem/1 var(--mono);min-height:1em}

/* the square */
.piata{position:relative;padding-top:clamp(2.5rem,7vh,5rem);background:var(--bg)}
.piata-head{margin-bottom:1.6rem}
h2{font-weight:350;font-size:clamp(1.7rem,4.2vw,3rem);letter-spacing:-.015em;margin-bottom:.9rem}
.lead{font-size:1.18rem;color:var(--ink2)}
.piata-grid{display:grid;grid-template-columns:minmax(0,24rem) minmax(0,1fr);grid-template-areas:"steps stage";column-gap:clamp(1rem,3vw,2.5rem);padding:0 max(16px,env(safe-area-inset-left));max-width:92rem;margin:0 auto;align-items:start}
.stage{grid-area:stage;position:sticky;top:calc(var(--bar) + 8px);height:calc(100svh - var(--bar) - 24px);min-height:420px;border-radius:14px;overflow:hidden;border:1px solid var(--line-soft);background:#0e0f2e;z-index:6}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:pan-y;cursor:grab}
.stage canvas:active{cursor:grabbing}
.hud{position:absolute;left:12px;top:12px;max-width:min(26rem,calc(100% - 24px));padding:.65rem .85rem;border-radius:10px;background:var(--glass);color:var(--glass-ink);font:500 .84rem/1.35 var(--mono);pointer-events:none}
.hud b{display:block;font:350 1.3rem/1.15 var(--serif);margin-bottom:.15rem}
.hud .n{color:var(--accent)}
.hud-tag{display:block;margin-top:.35rem;font:500 .7rem/1.3 var(--mono);font-style:normal;color:var(--muted)}
.ctl{position:absolute;left:10px;right:10px;bottom:10px;display:flex;flex-wrap:wrap;gap:.45rem .6rem;align-items:center;padding:.5rem;border-radius:12px;background:var(--glass);color:var(--glass-ink)}
.grp{display:flex;gap:.3rem;align-items:center}
.grp-l{font:600 .7rem/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;opacity:.85;margin-right:.1rem}
.mbtn,.cbtn,.wbtn,.sbtn{min-height:40px;border:1px solid var(--line);border-radius:999px;background:transparent;color:inherit;cursor:pointer;font:600 .8rem/1 var(--mono);padding:.3rem .75rem;display:inline-flex;align-items:center;gap:.4rem}
.mbtn svg{width:22px;height:22px}
.mbtn[aria-checked="true"],.cbtn[aria-checked="true"]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.wbtn{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:.3rem;max-width:100%}
.cbtn{white-space:nowrap}
@media (pointer:coarse){.mbtn,.cbtn,.wbtn,.sbtn{min-height:44px}}

.steps{grid-area:steps;list-style:none;margin:0;padding:0;position:relative;z-index:2}
.step{min-height:78svh;display:flex;flex-direction:column;justify-content:center;padding:1rem 0}
.step-in{background:var(--card);border:1px solid var(--line-soft);border-left:4px solid var(--line);border-radius:12px;padding:1.1rem 1.2rem;transition:border-color .3s,transform .3s}
.step.on .step-in{border-left-color:var(--accent)}
.step h3{font-weight:400;font-size:1.5rem;margin-bottom:.5rem}
.step p{font-size:1.05rem;margin:0 0 .75em;color:var(--ink2)}
.step p:last-child{margin:0}
.step .num{font-family:var(--mono);font-weight:600;color:var(--ink)}
.piata-note{margin-top:2rem;font-size:.95rem;color:var(--ink2)}

@media (max-width:900px){
  .piata-grid{grid-template-columns:minmax(0,1fr);grid-template-areas:"stage" "steps";padding:0}
  .stage{top:var(--bar);height:min(64svh,32rem);min-height:330px;border-radius:0;border-left:0;border-right:0}
  .step{min-height:56svh;justify-content:flex-start;padding:1rem max(16px,env(safe-area-inset-left)) 1rem}
  .hud{left:8px;top:8px;padding:.45rem .65rem;font-size:.76rem}.hud b{font-size:1.05rem}
  .ctl{left:6px;right:6px;bottom:6px;padding:.4rem;gap:.35rem}
  .grp-l{display:none}
  .mbtn span.t,.sbtn span.t{display:none}
  .cbtn{font-size:.72rem;padding:.25rem .6rem}
  .sbtn{padding:.3rem .65rem}
  .chips-grp{flex-basis:100%}
}
@media (max-height:560px) and (max-width:900px){.stage{height:70svh}}

/* bands */
.band{padding:clamp(3rem,8vh,5.5rem) 0}
.band.alt{background:var(--bg2)}
.band p{max-width:42rem}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.2rem}
@media (max-width:700px){.two{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line-soft);border-radius:12px;padding:1.1rem 1.2rem}
.card h3{font-weight:450;font-size:1.25rem;margin-bottom:.4rem}
.card p{font-size:1rem;margin:0}
.tiles{display:flex;flex-wrap:wrap;gap:1rem 2.2rem;margin:1.4rem 0}
.tile b{display:block;font:300 clamp(2rem,5vw,3.2rem)/1 var(--serif);color:var(--accent)}
.tile span{display:block;font:500 .82rem/1.3 var(--mono);color:var(--ink2);max-width:13rem;margin-top:.3rem}

/* chart */
.chart{margin:1.6rem 0;max-width:46rem}
.chart svg{width:100%;height:auto;display:block;overflow:visible}
.chart .ax{stroke:var(--line);stroke-width:1}
.chart .gl{stroke:var(--line-soft);stroke-width:1}
.chart text{fill:var(--ink2);font:500 12px var(--mono)}
.chart .pub{fill:var(--accent);stroke:var(--accent)}
.chart .rep{fill:var(--bg);stroke:var(--accent);stroke-width:2.5}
.chart .ln{fill:none;stroke:var(--accent);stroke-width:2.5}
.chart .ln2{fill:none;stroke:var(--accent);stroke-width:1.5;stroke-dasharray:3 5}
.chart .big{font:400 15px var(--serif);fill:var(--ink)}
.legend{display:flex;gap:1.4rem;flex-wrap:wrap;font:500 .8rem/1.3 var(--mono);color:var(--ink2);margin-top:.4rem}
.legend i{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:.4rem;vertical-align:-1px;border:2.5px solid var(--accent);background:var(--accent)}
.legend i.o{background:var(--bg)}
.verdict{border-left:4px solid var(--accent);padding:.2rem 0 .2rem 1rem;margin:1.2rem 0;font-size:1.12rem}

/* figures */
.fig{margin:1.6rem 0}
.fig img{display:block;width:100%;height:auto;border-radius:10px;border:1px solid var(--line-soft)}
.fig figcaption{font:500 .8rem/1.4 var(--mono);color:var(--ink2);margin-top:.5rem}
.fig figcaption a{color:var(--accent)}
.figs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;max-width:72rem;margin:1.6rem auto;padding:0 max(16px,env(safe-area-inset-left))}
.figs .fig{margin:0}
.figs .fig.w{grid-column:1/-1}
@media (max-width:700px){.figs{grid-template-columns:1fr}}
.listen{display:inline-flex;align-items:center;gap:.6rem;min-height:44px;padding:.4rem 1rem;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);font:600 .85rem/1 var(--mono);cursor:pointer}
ul.plain{padding-left:1.1rem;max-width:42rem}
ul.plain li{margin:.45em 0}
.end{font-size:clamp(1.3rem,3vw,1.9rem);font-weight:300;line-height:1.3;max-width:34rem;margin:0}
.src li{margin:.4em 0;font-size:.95rem}
.src{max-width:50rem;padding-left:1.1rem}
.foot{padding:2rem max(16px,env(safe-area-inset-left)) 3rem;border-top:1px solid var(--line-soft);font:500 .85rem/1.5 var(--mono);color:var(--ink2);text-align:center}
.foot a{color:var(--ink)}
.rail-note{font-size:.95rem;color:var(--ink2)}

@media (prefers-reduced-motion:reduce){.step-in{transition:none}}

/* the round back-to-top button would sit on the stage controls: hide it while the stage fills the screen on a phone */
@media (max-width:900px){body.in-stage .to-top-x{display:none!important}}