@font-face{font-family:"Instrument Serif";font-style:normal;font-weight:400;font-display:swap;src:url("fonts/InstrumentSerif-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:"Instrument Serif";font-style:normal;font-weight:400;font-display:swap;src:url("fonts/InstrumentSerif-latin-ext.woff2") format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url("fonts/InstrumentSerif-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+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:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url("fonts/InstrumentSerif-italic-latin-ext.woff2") format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:300 700;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+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:300 700;font-display:swap;src:url("fonts/IBMPlexSans-latin-ext.woff2") format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{
  color-scheme:dark;
  --bg:#05070d;--bg-2:#0a0e18;--surface:#0c111d;
  --ink:#f5f0e6;--ink-2:#dcd6ca;--muted:#b4aea2;--line:#262d40;--line-soft:#1b2132;
  --accent:#ffb066;--accent-ink:#1c1106;--ember:#ff7a3c;--fern:#9fd48a;--ash:#b9b3aa;
  --card:rgba(7,10,18,.84);--stage-ink:#fbf7ee;--stage-muted:#c9c3b6;--stage-plate:rgba(5,7,13,.74);
  --serif:"Instrument Serif","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --topbar:52px;
}
:root[data-theme="light"]{
  color-scheme:light;
  --bg:#efe8d9;--bg-2:#e6dece;--surface:#f8f3e8;
  --ink:#1a1612;--ink-2:#322c25;--muted:#4c453b;--line:#cdc2ab;--line-soft:#ddd3bf;
  --accent:#8a2c0d;--accent-ink:#fff7ec;--ember:#a8380f;--fern:#2f5d22;--ash:#5a544b;
  --card:rgba(248,243,232,.92);--stage-ink:#1a1612;--stage-muted:#4c453b;--stage-plate:rgba(248,243,232,.86);
}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]){
  color-scheme:light;
  --bg:#efe8d9;--bg-2:#e6dece;--surface:#f8f3e8;
  --ink:#1a1612;--ink-2:#322c25;--muted:#4c453b;--line:#cdc2ab;--line-soft:#ddd3bf;
  --accent:#8a2c0d;--accent-ink:#fff7ec;--ember:#a8380f;--fern:#2f5d22;--ash:#5a544b;
  --card:rgba(248,243,232,.92);--stage-ink:#1a1612;--stage-muted:#4c453b;--stage-plate:rgba(248,243,232,.86);
}}

*{box-sizing:border-box}
[hidden]{display:none!important}
svg[hidden]{display:none}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--topbar) + 12px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:1.0625rem;line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration-color:var(--accent);text-underline-offset:.18em}
a:hover{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:var(--accent-ink);padding:.6rem 1rem;z-index:100}
.skip-link:focus{left:8px;top:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

/* top bar */
.topbar{position:fixed;inset:0 0 auto 0;height:var(--topbar);z-index:40;display:flex;align-items:center;gap:.9rem;padding:0 clamp(12px,2.4vw,28px);font-size:.82rem;letter-spacing:.02em;
  background:linear-gradient(var(--bg),transparent);}
.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;font-weight:500;white-space:nowrap}
.brand-mark{width:9px;height:9px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#fff3d6,var(--ember) 60%,transparent 72%);box-shadow:0 0 10px var(--ember)}
.topnav{display:flex;gap:1.1rem;overflow:hidden;white-space:nowrap}
.topnav a{text-decoration:none;color:var(--muted)}
.topnav a:hover,.topnav a[aria-current=true]{color:var(--ink)}
.spacer{flex:1}
.chip{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:28px;padding:0 .5rem;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-size:.74rem;letter-spacing:.06em;color:var(--muted)}
.chip[aria-current=page]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.icon-btn,.ghost-btn{appearance:none;background:none;border:1px solid var(--line);color:var(--ink);border-radius:999px;height:28px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font:inherit}
.icon-btn{width:28px;padding:0}
.ghost-btn{padding:0 .8rem;gap:.4rem;font-size:.78rem;white-space:nowrap}
.ghost-btn:hover,.icon-btn:hover{border-color:var(--accent);color:var(--accent)}
@media (max-width:860px){.topnav{display:none}.brand span:last-child{max-width:38vw;overflow:hidden;text-overflow:ellipsis}}

/* the stage */
.story{position:relative}
.stage{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;z-index:1;background:radial-gradient(120% 90% at 70% 40%,var(--bg-2),var(--bg) 70%)}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
#globe{transition:opacity .6s ease}
#overlay{pointer-events:none}
.stage:not([data-layer=globe]) #globe{opacity:.10}
.stage:not([data-layer=globe]) #overlay{opacity:0}
.stage[data-layer=crater] #globe{opacity:0}
.stage[data-layer=bars] #globe,.stage[data-layer=after] #globe{opacity:.22}
.still{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:none}
.no-gl .still{display:block}.no-gl .stage canvas{display:none}
.layer{position:absolute;inset:var(--topbar) 0 0 0;opacity:0;visibility:hidden;transition:opacity .55s ease,visibility 0s .55s;pointer-events:none}
.stage[data-layer=scale] .layer-scale,.stage[data-layer=crater] .layer-crater,.stage[data-layer=bars] .layer-bars,.stage[data-layer=after] .layer-after{opacity:1;visibility:visible;transition:opacity .55s ease}
.layer-inner{position:absolute;top:0;bottom:0;right:clamp(16px,5vw,80px);left:clamp(420px,44vw,720px);display:flex;flex-direction:column;justify-content:center}
.layer-crater canvas{position:absolute;inset:0}
.layer figcaption,.layer .cap{font-size:.8rem;color:var(--stage-muted);margin-top:.8rem;max-width:44rem}

.clock{position:absolute;top:calc(var(--topbar) + 6px);right:clamp(10px,3.6vw,56px);text-align:right;z-index:3;pointer-events:none;background:var(--stage-plate);padding:.5rem .8rem .55rem;border-radius:6px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.clock b{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(1.9rem,3.6vw,3.3rem);line-height:1;font-variant-numeric:tabular-nums;color:var(--stage-ink);letter-spacing:.005em}
.clock span{display:block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:.35rem}
.hud{position:absolute;right:clamp(14px,4.2vw,64px);bottom:clamp(70px,10vh,96px);z-index:3;width:min(19rem,42vw);opacity:0;transition:opacity .4s;pointer-events:none;background:var(--stage-plate);border:1px solid var(--line);border-radius:6px;padding:.7rem .9rem;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.stage[data-hud="1"] .hud{opacity:1}
.hud h3{margin:0 0 .35rem;font:500 .72rem/1.3 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.hud ul{list-style:none;margin:0;padding:0;font-size:.84rem}
.hud li{display:flex;justify-content:space-between;gap:1rem;padding:.16rem 0;color:var(--stage-muted);opacity:.62;transition:opacity .3s,color .3s}
.hud li b{font-weight:500;font-variant-numeric:tabular-nums;white-space:nowrap}
.hud li.done{opacity:1;color:var(--stage-ink)}
.hud li.done span::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--ember);margin-right:.5rem;vertical-align:middle;box-shadow:0 0 8px var(--ember)}

/* the text that scrolls over the stage */
.steps{position:relative;z-index:2;margin-top:-100vh;margin-top:-100svh;pointer-events:none}
.step{min-height:112vh;min-height:112svh;display:flex;align-items:center;padding:0 clamp(16px,5.2vw,84px)}
.step .card{pointer-events:auto;width:min(31rem,100%);background:var(--card);border:1px solid var(--line);border-radius:6px;padding:1.25rem 1.4rem 1.3rem;backdrop-filter:blur(12px) saturate(1.1);-webkit-backdrop-filter:blur(12px) saturate(1.1);box-shadow:0 18px 60px rgba(0,0,0,.28)}
.step .card p{margin:0 0 .8rem}.step .card p:last-child{margin-bottom:0}
.when{display:block;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:.5rem;font-variant-numeric:tabular-nums}
.chapter-no{font-family:var(--serif);font-style:italic;font-size:1.25rem;color:var(--muted);display:block;margin-bottom:.1rem}
.step h2{font-family:var(--serif);font-weight:400;font-size:clamp(2rem,3.6vw,2.9rem);line-height:1.02;margin:0 0 .8rem;letter-spacing:-.005em;text-wrap:balance}
.step h3{font-family:var(--serif);font-weight:400;font-size:1.5rem;line-height:1.1;margin:0 0 .5rem}
.note{font-size:.84rem;color:var(--muted)}
.step.hero{min-height:100vh;min-height:100svh;align-items:flex-end;padding-bottom:clamp(28px,7vh,80px)}
.hero .card{background:none;border:0;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;padding:0;width:min(46rem,100%)}
.kicker{font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin:0 0 1rem}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(3.1rem,8.6vw,7.6rem);line-height:.9;letter-spacing:-.012em;margin:0 0 1.3rem;text-wrap:balance}
h1 em{font-style:italic;color:var(--accent)}
.deck{font-size:clamp(1.05rem,1.35vw,1.22rem);line-height:1.5;max-width:35rem;margin:0 0 1.2rem;color:var(--ink-2);text-shadow:0 1px 14px var(--bg)}
.scroll-cue{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-top:1.4rem;display:flex;align-items:center;gap:.7rem}
.scroll-cue::before{content:"";width:1px;height:28px;background:linear-gradient(var(--accent),transparent)}
.stage:not([data-first="1"]) .hero-credit{opacity:0}
.hero-credit{transition:opacity .3s;position:absolute;right:clamp(14px,4.2vw,64px);bottom:16px;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);z-index:3;max-width:44vw;text-align:right}

/* choose a town */
.picker{position:relative;max-width:27rem}
.picker label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:.35rem}
.picker-row{display:flex;gap:.5rem;align-items:center}
.picker input{flex:1;min-width:0;font:inherit;font-size:1rem;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:6px;padding:.62rem .8rem;min-height:44px}
.picker input::placeholder{color:var(--muted);opacity:.85}
.picker [role=listbox]{position:absolute;left:0;right:0;top:100%;margin:.25rem 0 0;padding:.25rem;list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:6px;z-index:20;max-height:15rem;overflow:auto;box-shadow:0 14px 40px rgba(0,0,0,.35)}
.picker li{padding:.5rem .6rem;border-radius:4px;cursor:pointer;font-size:.95rem}
.picker li[aria-selected=true],.picker li[role=option]:hover{background:var(--accent);color:var(--accent-ink)}
.picker li.none{color:var(--muted);cursor:default}
.town-line{font-size:.95rem;color:var(--ink-2);margin:.6rem 0 0;max-width:30rem;min-height:3em}
.clear-btn{appearance:none;background:none;border:1px solid var(--line);color:var(--ink);border-radius:999px;font:inherit;font-size:.8rem;padding:.3rem .75rem;cursor:pointer;white-space:nowrap;min-height:32px}
.clear-btn:hover{border-color:var(--accent);color:var(--accent)}

/* the reader's day */
.step.wide .card{width:min(36rem,100%)}
.timeline{list-style:none;margin:1rem 0 .9rem;padding:0;border-top:1px solid var(--line)}
.timeline li{display:grid;grid-template-columns:9.4rem 1fr;gap:.9rem;padding:.55rem 0;border-bottom:1px solid var(--line-soft);font-size:.95rem;line-height:1.4}
.timeline .tl-t{font-variant-numeric:tabular-nums;color:var(--accent);font-weight:500}
.timeline li.later .tl-t{color:var(--muted)}
.share-row{display:flex;align-items:center;gap:.45rem;flex-wrap:wrap;margin-top:.9rem}
.share-row .lbl{font-size:.8rem;color:var(--muted);margin-right:.3rem}
.share-row a,.share-row button{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-soft);background:transparent;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0}
.share-row a:hover,.share-row button:hover,.share-row a:focus-visible,.share-row button:focus-visible{border-color:var(--accent);color:var(--accent)}
@media (pointer:coarse){.share-row a,.share-row button{width:44px;height:44px}}
#status{font-size:.82rem;color:var(--muted);min-height:1.3em;margin:.4rem 0 0}

/* figures on the stage */
.scale-fig svg{width:100%;height:auto;max-height:66vh;display:block}
.scale-fig text{font-family:var(--sans);fill:var(--stage-ink)}
.scale-fig .m{fill:var(--stage-muted)}
.tally{list-style:none;margin:0;padding:0;max-width:40rem}
.tally-h{font:500 .72rem/1.3 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 .7rem}
.tally li{display:grid;grid-template-columns:minmax(8.5rem,15rem) 1fr 4.4rem;gap:.8rem;align-items:center;padding:.3rem 0;font-size:.92rem;border-bottom:1px solid var(--line-soft)}
.tally .bar{height:10px;background:var(--line-soft);border-radius:2px;position:relative;overflow:hidden}
.tally .bar i{position:absolute;inset:0 auto 0 0;background:linear-gradient(90deg,var(--ember),var(--accent));border-radius:2px}
.tally .bar u{position:absolute;top:0;bottom:0;background:repeating-linear-gradient(90deg,var(--accent) 0 3px,transparent 3px 6px);opacity:.75}
.tally li.kept .bar i{background:var(--fern)}
.tally b{font-weight:500;text-align:right;font-variant-numeric:tabular-nums}
.tally small{display:block;color:var(--stage-muted);font-size:.74rem;line-height:1.25}
.after-list{list-style:none;margin:0;padding:0;max-width:40rem;border-left:1px solid var(--line);position:relative}
.after-list li{display:grid;grid-template-columns:8.6rem 1fr;gap:1rem;padding:.5rem 0 .5rem 1.1rem;position:relative;font-size:.92rem;line-height:1.4}
.after-list li::before{content:"";position:absolute;left:-4px;top:1.05rem;width:7px;height:7px;border-radius:50%;background:var(--fern)}
.after-list .at{color:var(--accent);font-weight:500;font-variant-numeric:tabular-nums}
.after-list .mass{display:inline-block;border-radius:50%;background:var(--fern);vertical-align:middle;margin-right:.5rem;opacity:.9}

/* reading rail */
.rail{position:fixed;right:10px;top:50%;transform:translateY(-50%);z-index:30;display:flex;flex-direction:column;gap:2px}
.rail a{display:flex;align-items:center;justify-content:flex-end;gap:.5rem;height:20px;text-decoration:none;font-size:.72rem;color:var(--stage-ink)}
.rail .dot{width:7px;height:7px;border-radius:50%;background:var(--muted);opacity:.55;transition:transform .2s,background .2s,opacity .2s}
.rail a[aria-current=true] .dot{background:var(--accent);opacity:1;transform:scale(1.5)}
.rail-label{opacity:0;background:var(--stage-plate);padding:.1rem .5rem;border-radius:4px;transition:opacity .15s;white-space:nowrap;pointer-events:none}
.rail a:hover .rail-label,.rail a:focus-visible .rail-label{opacity:1}
@media (max-width:1100px){.rail{display:none}}

/* free view */
.free-bar{position:fixed;left:50%;transform:translateX(-50%);bottom:max(16px,env(safe-area-inset-bottom));z-index:45;display:none;align-items:center;gap:.8rem;background:var(--stage-plate);border:1px solid var(--line);border-radius:999px;padding:.5rem .8rem;width:min(44rem,calc(100vw - 24px));backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.free .free-bar{display:flex}
.free-bar input[type=range]{flex:1;min-width:0;accent-color:var(--accent);height:28px}
.free-bar button{appearance:none;font:inherit;font-size:.85rem;border:1px solid var(--line);background:none;color:var(--stage-ink);border-radius:999px;padding:.4rem .9rem;cursor:pointer;white-space:nowrap;min-height:36px}
.free-bar button:hover{border-color:var(--accent);color:var(--accent)}
.free .steps,.free .after,.free .rail,.free .hud,.free .hero-credit{visibility:hidden}
.free .stage{position:fixed;inset:0;z-index:35;cursor:grab;touch-action:none}
.free .topbar{z-index:46}
.free .free-hint{display:block}
.free-hint{display:none;position:fixed;left:50%;transform:translateX(-50%);bottom:calc(max(16px,env(safe-area-inset-bottom)) + 62px);z-index:45;font-size:.78rem;color:var(--stage-muted);text-align:center;width:max-content;max-width:90vw}

/* after the story */
.after{position:relative;z-index:3;background:var(--bg);border-top:1px solid var(--line);padding:clamp(48px,9vh,110px) clamp(16px,5.2vw,84px) 0}
.prose{max-width:43rem;margin:0 auto}
.prose h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.9rem,3.2vw,2.6rem);line-height:1.05;margin:2.8rem 0 .9rem;text-wrap:balance}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.02rem;font-weight:600;margin:1.6rem 0 .4rem}
.prose p{margin:0 0 1rem;color:var(--ink-2)}
.prose ul{padding-left:1.1rem;color:var(--ink-2)}
.prose li{margin-bottom:.5rem}
.sources{font-size:.9rem}
.table-wrap{overflow-x:auto;margin:1rem 0 1.4rem}
table{border-collapse:collapse;width:100%;font-size:.9rem}
caption{text-align:left;color:var(--muted);font-size:.84rem;padding-bottom:.5rem}
th,td{text-align:left;padding:.5rem .7rem .5rem 0;border-bottom:1px solid var(--line-soft);vertical-align:top}
thead th{font-weight:500;color:var(--muted);font-size:.8rem;letter-spacing:.04em;border-bottom-color:var(--line)}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.more-btn{appearance:none;font:inherit;font-size:.86rem;border:1px solid var(--line);background:none;color:var(--ink);border-radius:999px;padding:.45rem 1rem;cursor:pointer}
.more-btn:hover{border-color:var(--accent);color:var(--accent)}
.site-footer{max-width:43rem;margin:3.2rem auto 0;padding:1.3rem 0 2.2rem;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:.5rem 1.4rem;font-size:.84rem;color:var(--muted)}
.back-top{position:fixed;right:16px;bottom:max(16px,env(safe-area-inset-bottom));z-index:38;min-width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;gap:.4rem;padding:0 .9rem;cursor:pointer;font:inherit;font-size:.8rem}
.back-top:hover{border-color:var(--accent);color:var(--accent)}

/* phones: the globe above, the text below */
@media (max-width:860px){
  body{font-size:1rem}
  .step{align-items:flex-end;padding:0 10px 14px;min-height:118svh}
  .step .card{width:100%;padding:1rem 1.05rem 1.05rem;max-height:none}
  .step.hero{padding:0 0 0}
  .hero .card{padding:34px 16px 22px;background:linear-gradient(transparent,var(--bg) 46px);width:100%}
  h1{font-size:clamp(2.7rem,13.4vw,4.4rem);margin-bottom:1rem}
  .clock{left:50%;right:auto;transform:translateX(-50%);text-align:center;top:calc(var(--topbar) + 2px);padding:.3rem .8rem .4rem;white-space:nowrap}
  .ghost-btn[data-free-open] span{display:none}
  .clock b{font-size:1.7rem}
  .clock span{font-size:.64rem;margin-bottom:.2rem}
  .hud{display:none}
  .hero-credit{display:none}
  .layer-inner{left:12px;right:12px;top:66px;bottom:auto;height:calc(58svh - 66px - var(--topbar));justify-content:flex-start;overflow:hidden}
  .layer-crater .layer-inner{position:absolute;inset:0;height:auto}
  .layer-crater canvas{height:60svh;inset:0 0 auto 0}
  .tally li{grid-template-columns:8.2rem 1fr 3rem;font-size:.8rem;padding:.16rem 0;gap:.5rem}
  .tally small{display:none}
  .after-list li{grid-template-columns:6.2rem 1fr;font-size:.74rem;line-height:1.25;padding:.16rem 0 .16rem .7rem;gap:.5rem}
  .after-list li::before{top:.7rem}
  .timeline li{grid-template-columns:7.4rem 1fr;font-size:.9rem;gap:.6rem}
  .scale-fig svg{max-height:44svh}
  .layer .cap{display:none}
  .back-top span{display:none}.back-top{padding:0;justify-content:center}
}
@media (max-width:860px) and (max-height:700px){.step .card{font-size:.94rem}.step h2{font-size:1.75rem}}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.stage,.topbar,.rail,.back-top,.free-bar{display:none}.steps{margin-top:0}.step{min-height:0;padding:0 0 1rem}.step .card{border:0;background:none;box-shadow:none}}