@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400 800;font-display:swap;src:url(fonts/ebgaramond-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+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:"EB Garamond";font-style:normal;font-weight:400 800;font-display:swap;src:url(fonts/ebgaramond-normal-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-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"EB Garamond";font-style:italic;font-weight:400 800;font-display:swap;src:url(fonts/ebgaramond-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:"EB Garamond";font-style:italic;font-weight:400 800;font-display:swap;src:url(fonts/ebgaramond-italic-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-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}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/plexmono-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+2000-206F,U+2212}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/plexmono-latin-ext.woff2) format("woff2");unicode-range:U+0100-02AF,U+1E00-1E9F}

/* The stage is always night (the Earth from space). The text follows the theme. */
:root{
  --serif:"EB Garamond",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --night:#04060d;--night-ink:#f3eadb;--night-muted:#cbbfae;--gold:#f2c27a;--gold-2:#ffe2aa;
  --bg:#f6f0e4;--bg-2:#ede4d3;--card:rgba(250,245,236,.94);--ink:#1d1710;--muted:#4d4232;--line:rgba(29,23,16,.22);--line-soft:rgba(29,23,16,.12);
  --accent:#8a4a0c;--accent-2:#6b3606;--focus:#8a4a0c;--win:#b0631a;--win-mine:#8a4a0c;--curve:#1d1710;--tide:#4a6a8c;
  --stage-h:100vh;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#07090f;--bg-2:#0d1019;--card:rgba(10,12,20,.88);--ink:#f3eadb;--muted:#cbbfae;--line:rgba(243,234,219,.22);--line-soft:rgba(243,234,219,.12);
  --accent:#f2c27a;--accent-2:#ffe2aa;--focus:#ffe2aa;--win:#c98b45;--win-mine:#ffe2aa;--curve:#f3eadb;--tide:#8fb3d9;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#07090f;--bg-2:#0d1019;--card:rgba(10,12,20,.88);--ink:#f3eadb;--muted:#cbbfae;--line:rgba(243,234,219,.22);--line-soft:rgba(243,234,219,.12);
  --accent:#f2c27a;--accent-2:#ffe2aa;--focus:#ffe2aa;--win:#c98b45;--win-mine:#ffe2aa;--curve:#f3eadb;--tide:#8fb3d9;color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
svg[hidden]{display:none}
html{-webkit-text-size-adjust:100%;scroll-padding-top:56px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.18rem/1.55 var(--serif);font-kerning:normal;text-rendering:optimizeLegibility}
a{color:var(--accent);text-decoration-thickness:.07em;text-underline-offset:.15em}
a:hover{color:var(--accent-2)}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--bg);color:var(--ink);padding:.5rem 1rem;z-index:100}
.skip:focus{left:8px;top:8px}

/* top bar: slim, night coloured while over the stage */
.topbar{position:fixed;inset:0 0 auto 0;height:44px;z-index:40;display:flex;align-items:center;gap:.9rem;padding:0 max(14px,env(safe-area-inset-right)) 0 max(14px,env(safe-area-inset-left));
  background:rgba(4,6,13,.72);color:var(--night-ink);font:500 .82rem/1 var(--sans);letter-spacing:.02em;border-bottom:1px solid rgba(243,234,219,.08)}
.topbar a{color:inherit;text-decoration:none}
.topbar .home{font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:.72rem;display:flex;align-items:center;gap:.45rem}
.topbar .home svg{width:16px;height:16px}
.topbar nav{display:flex;gap:1rem;margin-left:auto;align-items:center}
.topbar nav a{opacity:.82}.topbar nav a:hover{opacity:1}
.topbar .jump{display:none}
@media (min-width:1100px){.topbar .jump{display:inline}}
.tbtn{appearance:none;background:transparent;border:1px solid rgba(243,234,219,.25);color:inherit;border-radius:999px;width:32px;height:32px;display:inline-grid;place-items:center;cursor:pointer;padding:0}
.tbtn svg{width:16px;height:16px}
.lang{border:1px solid rgba(243,234,219,.25);border-radius:999px;padding:.32rem .6rem}

/* the stage */
#stage{position:fixed;inset:0 0 auto 0;height:var(--stage-h);z-index:1;background:var(--night);touch-action:pan-y;cursor:grab;user-select:none;-webkit-user-select:none}
#stage:active{cursor:grabbing}
#stage canvas{position:absolute;left:0;top:0;display:block}
#still{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:none}
.no-gl #still{display:block}.no-gl #globe{display:none}
#hud{position:absolute;z-index:3;right:max(18px,3vw);bottom:22px;min-width:16rem;max-width:22rem;padding:.75rem .95rem .8rem;border-radius:14px;
  background:rgba(4,6,13,.62);border:1px solid rgba(242,194,122,.28);color:var(--night-ink);font:400 .86rem/1.35 var(--sans);pointer-events:none;transition:border-color .4s,box-shadow .4s}
#hud .k{display:block;font:600 .66rem/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--night-muted);margin-bottom:.35rem}
#hud-dt{display:block;font:400 1.75rem/1.05 var(--mono);color:var(--gold-2);letter-spacing:-.02em}
#hud-deg{display:block;font:400 .78rem/1.3 var(--mono);color:var(--night-muted);margin:.2rem 0 .45rem}
#hud-say{display:block;color:var(--night-ink)}
#hud.hit{border-color:var(--gold-2);box-shadow:0 0 0 1px rgba(255,226,170,.35),0 0 36px rgba(255,200,120,.18)}
#hud.hit #hud-say{color:var(--gold-2)}
body[data-mode="chart"] #hud{opacity:0}
.hint{position:absolute;z-index:3;left:50%;transform:translateX(-50%);bottom:22px;font:500 .8rem/1.2 var(--sans);color:var(--night-muted);background:rgba(4,6,13,.55);padding:.45rem .8rem;border-radius:999px;pointer-events:none;opacity:0;transition:opacity .5s}
body[data-mode="fit"] .hint,body[data-mode="intro"].past-hero .hint{opacity:1}

/* story column */
main{position:relative;z-index:2;pointer-events:none}
main>*{pointer-events:auto}
.story{width:min(30rem,40vw);margin-left:max(3vw,24px);padding:0 0 30vh}
.step{min-height:92vh;display:flex;align-items:center;pointer-events:none}
.step:first-child{min-height:100vh;align-items:flex-end;padding-bottom:12vh}
.card{pointer-events:auto;background:var(--card);border:1px solid var(--line-soft);border-radius:16px;padding:1.35rem 1.5rem 1.4rem;box-shadow:0 18px 60px rgba(0,0,0,.28);backdrop-filter:none}
.card p{margin:.6rem 0}
.card p:first-child{margin-top:0}
.kicker{font:600 .72rem/1.2 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0 0 .7rem}
h1{font:500 clamp(2rem,3.4vw,3.1rem)/1.04 var(--serif);letter-spacing:-.012em;margin:0 0 .8rem}
.deck{font-size:1.22rem;line-height:1.48;color:var(--ink)}
h2{font:500 1.62rem/1.12 var(--serif);margin:0 0 .6rem;letter-spacing:-.005em}
.quote{margin:.9rem 0;padding:.1rem 0 .1rem 1rem;border-left:2px solid var(--accent);font-style:italic}
.quote cite{display:block;font:400 .82rem/1.35 var(--sans);font-style:normal;color:var(--muted);margin-top:.35rem}
.meta{font:400 .84rem/1.45 var(--sans);color:var(--muted)}
.found{margin-top:.9rem;padding:.7rem .85rem;border-radius:10px;border:1px solid var(--accent);font:400 .92rem/1.45 var(--sans)}
.found b{font-family:var(--mono);font-weight:400}
.btns{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.9rem}
.btn{appearance:none;font:500 .86rem/1 var(--sans);color:var(--ink);background:transparent;border:1px solid var(--line);border-radius:999px;min-height:44px;padding:.55rem 1rem;cursor:pointer;display:inline-flex;align-items:center;gap:.4rem}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn[data-on="1"]{border-color:var(--accent);color:var(--accent)}
.rangewrap{margin-top:.9rem}
.rangewrap label{display:block;font:500 .8rem/1.3 var(--sans);color:var(--muted);margin-bottom:.3rem}
input[type=range]{width:100%;accent-color:var(--accent);min-height:44px}

/* full-width sections after the story */
.page{position:relative;z-index:2;background:var(--bg);border-top:1px solid var(--line-soft)}
.wrap{width:min(44rem,100% - 40px);margin:0 auto;padding:4rem 0 1rem}
.wide{width:min(64rem,100% - 40px);margin:0 auto}
.page h2{font-size:1.9rem;margin-top:2.4rem}
.page p{max-width:42rem}
#curba{width:min(64rem,100% - 40px)}
figure{margin:2rem 0}
figcaption{font:400 .84rem/1.45 var(--sans);color:var(--muted);margin-top:.5rem}
.chart-box{margin:1.4rem 0;background:var(--bg-2);border:1px solid var(--line-soft);border-radius:16px;padding:1rem 1rem .6rem}
#chart{width:100%;height:auto;display:block;font-family:var(--sans)}
#chart .ax{stroke:var(--line);stroke-width:1}
#chart .grid{stroke:var(--line-soft);stroke-width:1}
#chart text{fill:var(--muted);font-size:12px}
#chart .lab{fill:var(--ink);font-size:13px}
#chart .curve{fill:none;stroke:var(--curve);stroke-width:2}
#chart .tide{fill:none;stroke:var(--tide);stroke-width:2;stroke-dasharray:6 5}
#chart .uni{fill:none;stroke:var(--muted);stroke-width:1.2;stroke-dasharray:2 4}
#chart .win{fill:var(--muted);opacity:.32}
#chart #chart-all,#chart #chart-found{clip-path:url(#plotclip)}
#chart .win.mine{fill:var(--win-mine);opacity:1}
#chart .win.rej{fill:none;stroke:var(--muted);stroke-width:1.2;opacity:.7}
#chart .tl{display:none}
#chart.tides .tl{display:inline}
#chart.nocurve .cl{display:none}
.legend{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem;font:400 .82rem/1.3 var(--sans);color:var(--muted);margin:.4rem 0 .2rem}
.legend i{display:inline-block;width:18px;height:0;border-top:2px solid var(--curve);vertical-align:middle;margin-right:.35rem}
.legend i.t{border-top:2px dashed var(--tide)}.legend i.w{border:0;width:8px;height:14px;background:var(--win-mine);border-radius:2px}
table{border-collapse:collapse;width:100%;font:400 .9rem/1.4 var(--sans)}
th,td{text-align:left;padding:.5rem .5rem;border-bottom:1px solid var(--line-soft);vertical-align:top}
th{font-weight:600;color:var(--muted);font-size:.78rem;letter-spacing:.04em;text-transform:uppercase}
td.n{font-family:var(--mono);font-size:.84rem;white-space:nowrap}
.tablewrap{overflow-x:auto}
.share-row{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;margin:1.4rem 0}
.share-row .lbl{font:400 .84rem/1 var(--sans);color:var(--muted);margin-right:.2rem}
.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-grid;place-items:center;cursor:pointer;padding:0}
.share-row a:hover,.share-row button:hover{border-color:var(--accent);color:var(--accent)}
.share-row svg{width:18px;height:18px}
@media (pointer:coarse){.share-row a,.share-row button{width:44px;height:44px}}
.sources li{margin:.45rem 0;font:400 .9rem/1.45 var(--sans)}
footer{position:relative;z-index:2;background:var(--bg);border-top:1px solid var(--line-soft);font:400 .84rem/1.5 var(--sans);color:var(--muted)}
footer .wrap{padding:2rem 0 3rem}
footer a{color:var(--muted)}

/* reading rail */
.rail{position:fixed;right:10px;top:50%;transform:translateY(-50%);z-index:30;display:none;flex-direction:column;gap:12px;opacity:0;transition:opacity .4s}
body.past-hero .rail{opacity:1}
.rail a{position:relative;display:block;width:12px;height:12px}
.rail a::before{content:"";position:absolute;left:3px;top:3px;width:6px;height:6px;border-radius:50%;background:rgba(243,234,219,.45)}
.rail a[aria-current="true"]::before{background:var(--gold-2);transform:scale(1.35)}
.rail a span{position:absolute;right:20px;top:50%;transform:translateY(-50%);white-space:nowrap;font:500 .74rem/1 var(--sans);color:var(--night-ink);background:rgba(4,6,13,.8);padding:.3rem .5rem;border-radius:6px;opacity:0;pointer-events:none}
.rail a:hover span,.rail a:focus span{opacity:1}
@media (min-width:1200px){.rail{display:flex}}

/* phone: stage on top, text below; the stage never sits under the text */
@media (max-width:819px){
  .topbar{background:#04060d}
  #stage{top:44px;height:var(--stage-h);z-index:5;box-shadow:0 1px 0 rgba(243,234,219,.08)}
  main{padding-top:calc(var(--stage-h) + 44px)}
  #stage{transition:transform .35s ease}
  body.past-story #stage{transform:translateY(calc(-100% - 44px))}
  .chart-box{overflow-x:auto}
  #chart{min-width:620px}
  .story{width:auto;margin:0 14px;padding-bottom:10vh}
  .step,.step:first-child{min-height:auto;display:block;padding:1.1rem 0 1.4rem;align-items:initial}
  .step:first-child{padding-top:1.2rem}
  .card{box-shadow:none;border-radius:14px;padding:1.1rem 1.1rem 1.2rem}
  h1{font-size:2rem}
  #hud{left:8px;right:auto;bottom:8px;min-width:0;max-width:56%;padding:.38rem .55rem .42rem;font-size:.7rem;background:rgba(4,6,13,.5)}
  #hud .k{display:none}
  #hud-dt{font-size:1.05rem}
  #hud-deg{display:none}
  .hint{bottom:auto;top:8px;font-size:.72rem;padding:.3rem .6rem}
  body{font-size:1.1rem}
}
@media (max-width:819px) and (max-height:700px){h1{font-size:1.75rem}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
@media print{#stage,.topbar,.rail{display:none}main{padding:0}.story{width:auto}}
.map1433{width:100%;height:auto;display:block;border-radius:14px;background:var(--bg-2);font:500 12px var(--sans)}
.map1433 .sea{fill:var(--bg-2)}
.map1433 .land{fill:var(--line-soft);stroke:var(--line);stroke-width:.6}
.map1433 .ro{fill:var(--line-soft);stroke:var(--ink);stroke-width:1.1}
.map1433 .band{fill:var(--accent);opacity:.28}
.map1433 .town{fill:var(--muted)}
.map1433 .town.in{fill:var(--accent)}
.map1433 text{fill:var(--ink)}

.ticks{display:flex;justify-content:space-between;font:400 .72rem/1 var(--mono);color:var(--muted);margin-top:-.2rem}
.playbtn{position:absolute;z-index:4;right:max(18px,3vw);top:58px;min-height:36px;padding:.4rem .85rem;border-radius:999px;border:1px solid rgba(243,234,219,.3);background:rgba(4,6,13,.55);color:var(--night-ink);font:500 .78rem/1 var(--sans);cursor:pointer}
.playbtn:hover{border-color:var(--gold)}
@media (max-width:819px){.playbtn{top:8px;right:8px;min-height:32px;padding:.3rem .7rem;font-size:.72rem}}
@media (pointer:coarse){.playbtn{min-height:44px}}