@font-face{font-family:"Newsreader";font-style:normal;font-weight:200 800;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+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:200 800;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+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+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,U+FEFF,U+FFFD}
@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+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,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-Regular.woff2) format("woff2")}

/* The sky panels are the subject, like a photograph: they stay night in both themes. */
:root{
  --bg:#f4efe4;--bg-2:#ebe3d2;--card:#fbf8f1;--ink:#15171f;--ink-2:#3a3d4a;--rule:#cfc4ad;--rule-2:#8f8672;
  --accent:#7a3e00;--link:#1d3a8a;--gold:#8a5a00;
  --sky:#04060d;--sky-2:#0b1020;--sky-ink:#eef0f6;--sky-ink-2:#c3c8d8;--star:#ffe8b8;--sun:#fff3dc;
  --bar-bg:rgba(244,239,228,.92);
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#070912;--bg-2:#0d1120;--card:#101528;--ink:#eceef5;--ink-2:#c2c7d6;--rule:#262d45;--rule-2:#56607e;
  --accent:#ffb454;--link:#a9c1ff;--gold:#ffc766;--bar-bg:rgba(7,9,18,.9);
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#070912;--bg-2:#0d1120;--card:#101528;--ink:#eceef5;--ink-2:#c2c7d6;--rule:#262d45;--rule-2:#56607e;
    --accent:#ffb454;--link:#a9c1ff;--gold:#ffc766;--bar-bg:rgba(7,9,18,.9);
    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(--bg);color:var(--ink);font:400 1.1875rem/1.62 "Newsreader",Georgia,serif;font-optical-sizing:auto}
a{color:var(--link);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:3px}
img{max-width:100%;height:auto;display:block}
b,strong{font-weight:640}
.num,.mono{font-family:"Plex Mono",ui-monospace,monospace;font-size:.86em;letter-spacing:-.01em}
.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}

/* ---- top bar ---- */
.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}
.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,.topnav a[aria-current="true"]{color:var(--ink);text-decoration:underline}
.spacer{flex:1 1 0}
.chip{border:1px solid var(--rule-2);border-radius:99px;padding:.1rem .6rem;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:640px){.topnav{display:none}.topbar{gap:.6rem}}

/* ---- right 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(--card);padding:.1rem .45rem;border-radius:4px;border:1px solid var(--rule);white-space:nowrap}
.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(--rule-2);flex:none;transition:background .2s,transform .2s}
.rail a[aria-current="true"] i{background:var(--accent);border-color:var(--accent);transform:scale(1.3)}
.rail.on-sky a{color:var(--sky-ink-2)}
.rail.on-sky i{border-color:var(--sky-ink-2)}
@media (max-width:1100px){.rail{display:none}}

/* ---- hero: the sky ---- */
.hero{position:relative;min-height:calc(100svh - 2.75rem);display:grid;align-items:end;background:var(--sky);color:var(--sky-ink);overflow:hidden;isolation:isolate}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-1}
.hero-text{padding:0 1.25rem 3.2rem;max-width:46rem;margin:0 auto;width:100%}
.kicker{font:500 .8rem/1.3 "Plex Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--sky-ink-2);margin:0 0 1rem}
h1{font-weight:500;font-size:clamp(2.7rem,9vw,5.6rem);line-height:.98;letter-spacing:-.025em;margin:0 0 1.2rem;font-variation-settings:"opsz" 72;text-wrap:balance}
h1 em{font-style:italic;font-weight:400;color:var(--star)}
.deck{font-size:clamp(1.15rem,2.6vw,1.4rem);line-height:1.5;color:var(--sky-ink);max-width:36rem;margin:0 0 1.6rem;text-shadow:0 0 18px var(--sky)}
.cue{display:inline-flex;align-items:center;gap:.5rem;color:var(--sky-ink);text-decoration:none;border:1px solid rgba(238,240,246,.4);padding:.55rem 1rem;border-radius:99px;font-size:.95rem;min-height:44px}
.cue:hover{border-color:var(--sky-ink)}
.hero .cr{position:absolute;right:1rem;bottom:.6rem;margin:0;font-size:.72rem;color:var(--sky-ink-2)}

/* ---- prose blocks ---- */
.block{max-width:42rem;margin:0 auto;padding:4.5rem 1.25rem 1rem}
.block.wide{max-width:72rem}
.block.wide>p,.block.wide>h2,.block.wide>.eyebrow,.block.wide>h3{max-width:42rem;margin-left:auto;margin-right:auto}
.eyebrow{font:500 .78rem/1.3 "Plex Mono",monospace;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);margin:0 0 .7rem}
h2{font-weight:500;font-size:clamp(1.85rem,4.4vw,2.75rem);line-height:1.08;letter-spacing:-.018em;margin:0 0 1.2rem;text-wrap:balance;font-variation-settings:"opsz" 60}
h3{font-weight:600;font-size:1.25rem;line-height:1.25;margin:2rem 0 .6rem}
h2 .anchor,h3 .anchor{color:inherit;text-decoration:none}
h2 .anchor:hover::after{content:" #";color:var(--rule-2)}
p{margin:0 0 1.1rem}
.lede::first-letter{font-size:3.4em;float:left;line-height:.82;padding:.08em .08em 0 0;color:var(--accent);font-weight:500}
blockquote{margin:1.8rem 0;padding:0 0 0 1.3rem;border-left:3px solid var(--accent);font-style:italic;font-size:1.22rem;line-height:1.5}
blockquote p{margin:0 0 .5rem}
blockquote cite{display:block;font-style:normal;font-size:.9rem;color:var(--ink-2);margin-top:.5rem}
.note{font-size:.95rem;color:var(--ink-2)}

/* ---- figures ---- */
.fig{margin:2rem 0}
.fig .frame{background:var(--bg-2);border-radius:4px;overflow:hidden}
.fig figcaption{font-size:.93rem;line-height:1.45;color:var(--ink-2);margin-top:.6rem}
.fig .cr{display:block;font-size:.8rem;margin-top:.25rem}
.fig.bleed{margin-left:auto;margin-right:auto;max-width:60rem}

/* ---- the sky story (sticky stage) ---- */
.story{position:relative;background:var(--sky);color:var(--sky-ink)}
.story .stage-wrap{position:sticky;top:2.75rem;height:calc(100svh - 2.75rem);z-index:0}
.story .stage{position:absolute;inset:0;overflow:hidden}
.story canvas{position:absolute;inset:0;width:100%;height:100%}
.hud{position:absolute;left:1rem;top:1rem;font:400 .82rem/1.4 "Plex Mono",monospace;color:var(--sky-ink);background:rgba(4,6,13,.72);padding:.45rem .7rem;border-radius:4px;max-width:calc(100% - 2rem)}
.hud b{font-weight:400;color:var(--star)}
.story .prose{position:relative;z-index:1;margin-top:calc(-100svh + 2.75rem);padding-bottom:40svh}
.chapter{min-height:100svh;display:flex;align-items:center;padding:0 1.25rem}
.chapter:first-child{padding-top:30svh}
.chapter .card{max-width:27rem;background:rgba(4,6,13,.86);border:1px solid rgba(195,200,216,.22);padding:1.4rem 1.5rem 1.2rem;border-radius:6px;backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);color:var(--sky-ink)}
.chapter .card p{font-size:1.08rem;line-height:1.58;color:var(--sky-ink)}
.chapter .card p:last-child{margin-bottom:0}
.chapter .card h2{font-size:1.65rem;margin-bottom:.8rem}
.chapter .card a{color:#c4d4ff}
.stamp{font:500 .74rem/1.3 "Plex Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--star);margin:0 0 .6rem}
@media (min-width:900px){.chapter{padding-left:6vw}}
@media (max-width:640px){.chapter{align-items:flex-end;padding-bottom:12svh}.chapter .card{padding:1.1rem 1.15rem 1rem}}

/* ---- interactive panels (dark instruments) ---- */
.panel{background:var(--sky);color:var(--sky-ink);border-radius:8px;overflow:hidden;margin:2rem auto;max-width:72rem;border:1px solid var(--rule)}
.panel .view{position:relative}
.panel canvas{display:block;width:100%;height:auto;touch-action:pan-y}
.panel .ctl{display:grid;gap:1rem 1.6rem;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));padding:1rem 1.2rem 1.2rem;border-top:1px solid rgba(195,200,216,.18);background:var(--sky-2)}
.panel label{display:block;font-size:.95rem;color:var(--sky-ink)}
.panel label .v{float:right;font-family:"Plex Mono",monospace;font-size:.85rem;color:var(--star)}
.panel input[type=range]{width:100%;margin:.5rem 0 0;accent-color:#ffc766;height:28px}
.readout{font-size:1.02rem;line-height:1.5;color:var(--sky-ink);padding:1rem 1.2rem;margin:0;border-top:1px solid rgba(195,200,216,.18);min-height:4.6rem}
.readout b{color:var(--star);font-weight:500}
.panel .legend{position:absolute;left:.8rem;bottom:.6rem;font:400 .76rem/1.4 "Plex Mono",monospace;color:var(--sky-ink-2);background:rgba(4,6,13,.7);padding:.25rem .5rem;border-radius:3px;margin:0}
.btns{display:flex;flex-wrap:wrap;gap:.5rem}
.btn{font:inherit;font-size:.92rem;min-height:44px;padding:.35rem .95rem;border-radius:99px;border:1px solid rgba(195,200,216,.45);background:transparent;color:var(--sky-ink);cursor:pointer}
.btn[aria-pressed="true"]{background:var(--star);color:#1a1204;border-color:var(--star)}

/* ---- the CMB time machine ---- */
.glow{position:relative;height:clamp(15rem,40vw,28rem);display:grid;place-items:center;text-align:center;padding:1rem;overflow:hidden}
.glow canvas{position:absolute;inset:0;width:100%;height:100%}
.glow .big{position:relative;font:400 clamp(2.2rem,7vw,4.4rem)/1 "Newsreader",serif;letter-spacing:-.02em;padding:.4rem .9rem;border-radius:6px;background:rgba(4,6,13,.8);color:var(--sky-ink)}
.glow .big small{display:block;font:400 .9rem/1.4 "Plex Mono",monospace;letter-spacing:.02em;color:var(--sky-ink-2);margin-top:.5rem}

/* ---- timeline of attempts ---- */
.people{list-style:none;padding:0;margin:2.5rem 0 0;display:grid;gap:0}
.person{display:grid;grid-template-columns:6.5rem 1fr;gap:1.2rem;padding:1.4rem 0;border-top:1px solid var(--rule)}
.person .yr{font:500 1.6rem/1 "Newsreader",serif;color:var(--accent);letter-spacing:-.01em}
.person .who{display:block;font-weight:600;font-size:1.12rem;margin:.1rem 0 .35rem}
.person p{margin:0 0 .6rem;font-size:1.06rem}
.person .face{width:6.5rem;margin-top:.7rem;border-radius:3px;overflow:hidden;background:var(--bg-2)}
.person .face img{filter:grayscale(.2)}
.person .cr{display:block;font-size:.74rem;color:var(--ink-2);margin-top:.2rem;line-height:1.3}
.verdict{display:inline-block;font:500 .72rem/1.2 "Plex Mono",monospace;letter-spacing:.08em;text-transform:uppercase;padding:.22rem .5rem;border-radius:3px;border:1px solid var(--rule-2);color:var(--ink-2);margin-bottom:.4rem}
.verdict.yes{border-color:var(--accent);color:var(--accent)}
@media (max-width:520px){.person{grid-template-columns:1fr;gap:.3rem}.person .face{width:5.5rem;float:right;margin:0 0 .5rem 1rem}}

/* ---- the log ruler ---- */
.ruler{margin:2rem 0;overflow:hidden}
.ruler svg{width:100%;height:auto;display:block}
.ruler .ax{stroke:var(--rule-2)}
.ruler text{fill:var(--ink-2);font:400 13px "Plex Mono",monospace}
.ruler .lab{fill:var(--ink);font:500 15px "Newsreader",serif}
.ruler .hi{fill:var(--accent)}
.ruler .hl{stroke:var(--accent)}
.ruler .band{fill:var(--accent);opacity:.14}

/* ---- the energy bars ---- */
.bars{margin:2rem 0;display:grid;gap:.9rem}
.bar{display:grid;grid-template-columns:minmax(8rem,13rem) 1fr;gap:.4rem 1rem;align-items:center}
.bar .l{font-size:.98rem;line-height:1.3}
.bar .t{height:1.6rem;background:var(--bg-2);border-radius:3px;position:relative;overflow:hidden}
.bar .f{position:absolute;inset:0 auto 0 0;background:var(--accent);border-radius:3px}
.bar .n{position:absolute;right:.5rem;top:50%;transform:translateY(-50%);font:400 .82rem "Plex Mono",monospace;color:var(--ink)}
@media (max-width:520px){.bar{grid-template-columns:1fr}}

.srcs{padding-left:1.1rem;font-size:.92rem;line-height:1.5}
.srcs li{margin-bottom:.45rem;overflow-wrap:anywhere}
.method{font-size:1rem}
.foot{max-width:42rem;margin:4rem auto 0;padding:2rem 1.25rem 3rem;border-top:1px solid var(--rule);font-size:.92rem;color:var(--ink-2)}
.foot a{color:var(--link)}
noscript p,.fallback{font-size:.95rem;color:var(--sky-ink-2);padding:0 1.2rem}
body.nf main{max-width:36rem;margin:20vh auto;padding:0 1.25rem}
.bar .f.w-sun{width:100%}.bar .f.w-all{width:.26%;min-width:3px}.bar .f.w-fus{width:.075%;min-width:3px}.bar .f.w-cmb{width:.047%;min-width:3px}
.bar .f.w-sun+.n{color:var(--bg)}
.ruler circle.hi{fill:var(--accent)}
.ruler circle{fill:var(--ink-2)}
.ruler svg{max-width:26rem;margin:0 auto}
.glow .big{justify-self:center;align-self:center;margin:0}
@media (max-width:640px){.panel .legend{position:static;background:none;padding:.5rem .8rem 0}}
h1 .kicker{display:block;font-variation-settings:normal}