@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400 700;font-display:swap;src:url("fonts/ebgaramond-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:400 700;font-display:swap;src:url("fonts/ebgaramond-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:"EB Garamond";font-style:normal;font-weight:400 700;font-display:swap;src:url("fonts/ebgaramond-greek.woff2") format("woff2");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}
@font-face{font-family:"EB Garamond";font-style:italic;font-weight:400 700;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:400 700;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+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:"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{
  --paper:#f1eadb;--map-paper:#f1eadb;--card:#f8f4ea;--card-line:#d8ccb2;--ink:#21180e;--muted:#4f4232;--red:#8a2414;--zone:#1c4775;--truth:#16110b;--site:#4a5a24;--river:#4f7690;--test:#0b6159;
  --map-halo:rgba(244,238,223,.93);--card-scrim:rgba(244,238,223,.9);--line-soft:#cdbf9f;--accent:#8a2414;--focus:#1c4775;
  --to-top-bg:#f4eedf;--to-top-fg:#21180e;
  color-scheme:light;
}
:root[data-theme-resolved="dark"]{
  --paper:#14161b;--map-paper:#14161b;--card:#191b21;--card-line:#33353d;--ink:#f1e9d7;--muted:#cdc0a7;--red:#f2917a;--zone:#93bff2;--truth:#fbf6ea;--site:#c3cb86;--river:#6f98b3;--test:#5fd4c3;--zone:#5d9bd6;
  --map-halo:rgba(17,18,22,.88);--card-scrim:rgba(17,18,22,.88);--line-soft:#3b3e47;--accent:#f2917a;--focus:#93bff2;
  --to-top-bg:#111216;--to-top-fg:#f1e9d7;
  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(--paper);color:var(--ink);font:400 19px/1.55 "EB Garamond",Georgia,serif;font-feature-settings:"onum" 0,"lnum" 1}
a{color:inherit;text-decoration-color:var(--line-soft);text-underline-offset:3px}
a:hover{text-decoration-color:currentColor}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.muted{color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:8px;top:-60px;z-index:50;background:var(--card);padding:8px 12px;border-radius:6px}
.skip-link:focus{top:8px}

/* top bar: slim, quiet */
.topbar{position:fixed;inset:0 0 auto 0;height:44px;z-index:30;display:flex;align-items:center;gap:6px;padding:0 12px;background:var(--paper);border-bottom:1px solid var(--line-soft);font:500 13.5px/1 "IBM Plex Sans",system-ui,sans-serif}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:600;white-space:nowrap}
.brand-mark{font:italic 600 17px/1 "EB Garamond",serif;color:var(--red)}
.topnav{display:flex;gap:2px;margin-left:12px;overflow:hidden}
.topnav a{padding:6px 8px;border-radius:6px;text-decoration:none;color:var(--muted);white-space:nowrap}
.topnav a[aria-current="true"],.topnav a:hover{color:var(--ink);background:color-mix(in srgb,var(--ink) 7%,transparent)}
.spacer{flex:1}
.chip{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:30px;padding:0 8px;border-radius:15px;text-decoration:none;color:var(--muted);font-weight:600;font-size:12.5px}
.chip[aria-current="page"]{color:var(--ink);box-shadow:inset 0 0 0 1px var(--line-soft)}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:0;border-radius:18px;background:transparent;color:var(--ink);cursor:pointer;font:600 18px/1 "IBM Plex Sans",sans-serif}
.icon-btn:hover{background:color-mix(in srgb,var(--ink) 8%,transparent)}
@media (pointer:coarse){.icon-btn,.chip{min-width:44px;height:44px}}
.progress{position:fixed;left:0;right:0;top:44px;height:2px;z-index:31;pointer-events:none}
.progress span{display:block;height:100%;background:var(--red);transform-origin:0 0;transform:scaleX(0);opacity:.7}

/* rail */
.rail{position:fixed;right:4px;top:50%;transform:translateY(-50%);z-index:20;display:flex;flex-direction:column;gap:3px;opacity:0;transition:opacity .5s}
body:not([data-scene="ptolemy"]) .rail{opacity:1}
.rail a{position:relative;display:block;width:22px;height:20px;text-decoration:none}
.rail .dot{position:absolute;right:7px;top:7px;width:6px;height:6px;border-radius:50%;background:var(--muted);opacity:.45}
.rail a[aria-current="true"] .dot{background:var(--red);opacity:1;transform:scale(1.35)}
.rail .rail-label{position:absolute;right:24px;top:50%;transform:translateY(-50%);white-space:nowrap;font:500 12.5px "IBM Plex Sans",sans-serif;background:var(--card);padding:3px 8px;border-radius:5px;border:1px solid var(--line-soft);opacity:0;pointer-events:none}
.rail a:hover .rail-label,.rail a:focus-visible .rail-label{opacity:1}
@media (max-width:1100px){.rail{display:none}}

/* the stage */
.story{position:relative}
.stage{position:sticky;top:0;height:calc(var(--vh0,1vh)*100);width:100%;overflow:hidden;z-index:0;background:var(--map-paper)}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block;opacity:0;transition:opacity .9s ease;touch-action:pan-y}
.map-ready .stage canvas{opacity:1}
@media (min-width:1101px){.stage{width:calc(100% - 30px);-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 70px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 70px),transparent)}}
.legend li:has(.k-test),.legend li:has(.k-site){display:none}
body[data-scene="tests"] .legend li:has(.k-test),body[data-scene="free"] .legend li:has(.k-site){display:flex}
.stage .still{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:none}
.loading{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font:500 14px "IBM Plex Sans",sans-serif;color:var(--muted)}
.legend{position:absolute;right:16px;top:140px;z-index:2;background:var(--card-scrim);border:1px solid var(--line-soft);border-radius:8px;padding:6px 9px;font:500 11.5px/1.3 "IBM Plex Sans",sans-serif;max-width:230px;opacity:0;transition:opacity .5s}
body:not([data-scene="ptolemy"]):not([data-scene="numbers"]) .legend{opacity:1}
.legend ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.legend li{display:flex;gap:8px;align-items:center}
.legend i{flex:none;width:14px;height:10px;display:inline-block}
.k-red{border-top:2px solid var(--red);height:0!important;position:relative}.k-red::after{content:"";position:absolute;left:4px;top:-4px;width:6px;height:6px;border-radius:50%;background:var(--red)}
.k-zone{background:color-mix(in srgb,var(--zone) 45%,transparent);border:1.5px solid var(--zone);border-radius:5px}
.k-truth{background:var(--truth);width:9px!important;height:9px!important}
.k-test{background:var(--test);border-radius:50%;width:10px!important}
.k-site{background:var(--site);width:4px!important;height:4px!important}
.mapctl{position:absolute;right:14px;top:58px;z-index:2;display:flex;flex-direction:column;gap:6px;align-items:flex-end}
.mapctl .icon-btn{background:var(--card-scrim);border:1px solid var(--line-soft)}
.card-pop{position:absolute;left:0;top:0;z-index:5;width:min(330px,calc(100% - 16px));max-height:calc(100% - 24px);overflow:auto;background:var(--card);border:1px solid var(--card-line);border-radius:10px;padding:12px 14px 10px;box-shadow:0 6px 24px rgba(0,0,0,.18);font:400 14px/1.45 "IBM Plex Sans",sans-serif}
.card-pop h3{margin:0 0 4px;font:italic 600 24px/1.1 "EB Garamond",serif;color:var(--red)}
.pop-kicker{margin:0;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.pop-nums{font-variant-numeric:tabular-nums}
.pop-sub{margin:.7em 0 .2em;font-weight:600}
.pop-list{margin:0;padding-left:1.1em}.pop-list.small{font-size:13px}
.pop-x{position:absolute;right:6px;top:4px;width:36px;height:36px;border:0;background:transparent;color:var(--muted);font-size:22px;cursor:pointer;border-radius:18px}
.card-pop p{margin:.45em 0}

/* the steps */
.steps{list-style:none;margin:0;margin-top:calc(var(--vh0,1vh)*-100);padding:0;position:relative;z-index:1;pointer-events:none}
.step{min-height:calc(var(--vh0,1vh)*105);display:flex;align-items:center;padding:0 0 0 max(24px,4vw)}
.step:first-child{min-height:calc(var(--vh0,1vh)*100)}
.step-card,.hero-card,.panel{pointer-events:auto;width:min(480px,40vw);background:var(--card);border:1px solid var(--card-line);border-radius:12px;padding:20px 24px 18px;box-shadow:0 6px 30px rgba(0,0,0,.08)}
.hero-card{width:min(560px,44vw);background:color-mix(in srgb,var(--card) 92%,transparent)}
.kicker{text-wrap:balance;margin:0 0 6px;font:600 12px/1.3 "IBM Plex Sans",sans-serif;letter-spacing:.08em;text-transform:uppercase;color:var(--red)}
h1{margin:.1em 0 .35em;font:600 clamp(32px,3.6vw,52px)/1.04 "EB Garamond",serif;letter-spacing:-.01em}
h2{margin:.1em 0 .45em;font:600 clamp(25px,2.2vw,32px)/1.12 "EB Garamond",serif}
h3{font:600 22px/1.2 "EB Garamond",serif;margin:1.4em 0 .3em}
.anchor{margin-left:.3em;font-size:.6em;color:var(--muted);text-decoration:none;opacity:0}
h2:hover .anchor,.anchor:focus{opacity:1}
.deck{font-size:21px;line-height:1.48}
.step-card p{margin:.6em 0}
.big{margin:.2em 0 .5em;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.big .num{font:600 54px/1 "EB Garamond",serif;color:var(--zone)}
.big small{font:500 14px/1.3 "IBM Plex Sans",sans-serif;color:var(--muted);max-width:14em}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0 6px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 16px;border-radius:21px;border:1px solid var(--line-soft);background:transparent;color:var(--ink);font:600 14.5px "IBM Plex Sans",sans-serif;text-decoration:none;cursor:pointer}
.btn.primary{background:var(--red);border-color:var(--red);color:var(--paper)}
.btn.small{min-height:36px;font-size:13px;background:var(--card-scrim)}
.scroll-cue{font:500 13.5px "IBM Plex Sans",sans-serif;color:var(--muted);margin:10px 0 0}
.drop,.readings{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 6px;align-items:center}
.drop-label{font:600 13px "IBM Plex Sans",sans-serif;color:var(--muted);margin-right:4px}
.chip-btn{min-height:36px;padding:0 12px;border-radius:18px;border:1px solid var(--line-soft);background:transparent;color:var(--ink);font:500 13.5px "IBM Plex Sans",sans-serif;cursor:pointer}
.chip-btn[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
@media (pointer:coarse){.chip-btn{min-height:44px}body:not([data-scene="free"]) .mapctl{display:none}}
.drop-out{min-height:3em;font:400 16px/1.45 "IBM Plex Sans",sans-serif}

/* explorer panel */
.panel{font-size:18px}
.combo{position:relative;margin:12px 0 8px}
.combo label{display:block;font:600 13px "IBM Plex Sans",sans-serif;color:var(--muted);margin-bottom:4px}
.combo input{width:100%;min-height:46px;padding:0 14px;border-radius:10px;border:1px solid var(--line-soft);background:var(--paper);color:var(--ink);font:500 16px "IBM Plex Sans",sans-serif}
.combo ul{position:absolute;left:0;right:0;top:100%;z-index:6;margin:4px 0 0;padding:4px;list-style:none;background:var(--card);border:1px solid var(--card-line);border-radius:10px;max-height:280px;overflow:auto;font:500 15px "IBM Plex Sans",sans-serif;box-shadow:0 8px 24px rgba(0,0,0,.15)}
.combo li{padding:9px 10px;border-radius:6px;cursor:pointer}
.combo li[aria-selected="true"],.combo li:hover{background:color-mix(in srgb,var(--ink) 8%,transparent)}
.combo .clear{margin-top:8px}
.quick{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font:500 13px "IBM Plex Sans",sans-serif;color:var(--muted)}
.quick button{min-height:34px;padding:0 12px;border-radius:17px;border:1px solid var(--line-soft);background:transparent;color:var(--ink);font:500 13.5px "IBM Plex Sans",sans-serif;cursor:pointer}
.result{margin:12px 0;padding:10px 12px;border-left:3px solid var(--red);background:color-mix(in srgb,var(--red) 5%,var(--card));font:400 15px/1.45 "IBM Plex Sans",sans-serif}
.result .clear{float:right;margin:0 0 6px 8px}
.result h3{margin:0 0 4px;font:italic 600 24px/1.1 "EB Garamond",serif}
.result p{margin:.4em 0}
.share{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:12px 0 4px}
.share-label{font:600 13px "IBM Plex Sans",sans-serif;color:var(--muted)}
.share-row{display:flex;gap:6px}
.sbtn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-soft);background:transparent;color:var(--ink);cursor:pointer}
.sbtn:hover{color:var(--accent);border-color:var(--accent)}
@media (pointer:coarse){.sbtn{width:44px;height:44px}}
.share-msg{min-height:1.2em;font:500 13px "IBM Plex Sans",sans-serif;color:var(--muted);margin:2px 0}
.timebar{display:flex;align-items:center;gap:10px;margin:10px 0 4px}
.timebar label{flex:1}.timebar input{width:100%;accent-color:var(--red)}
.note{font:400 13.5px/1.4 "IBM Plex Sans",sans-serif;color:var(--muted)}

/* after the story */
.after{position:relative;z-index:2;background:var(--paper);border-top:1px solid var(--line-soft);padding:48px 20px 24px;max-width:66rem;margin:0 auto}
.prose{max-width:40rem;margin:0 auto}
.prose h2{margin-top:1.6em}
.tablewrap{max-width:64rem;margin:18px 0 18px 50%;transform:translateX(-50%);width:min(64rem,calc(100vw - 40px));overflow-x:auto}
table{border-collapse:collapse;width:100%;font:400 14px/1.4 "IBM Plex Sans",sans-serif}
caption{text-align:left;color:var(--muted);font-size:13px;padding-bottom:6px}
th,td{text-align:left;vertical-align:top;padding:7px 10px;border-bottom:1px solid var(--line-soft)}
thead th{font-weight:600;border-bottom:1.5px solid var(--ink)}
tbody th{font:italic 600 17px "EB Garamond",serif;color:var(--red);white-space:nowrap}
.tag{display:inline-block;margin-left:6px;padding:0 6px;border-radius:4px;background:var(--test);color:var(--paper);font-size:11.5px;font-weight:600}
.sources{font:400 15px/1.45 "IBM Plex Sans",sans-serif;padding-left:1.1em}
.sources li{margin:.35em 0}
.site-footer{max-width:40rem;margin:48px auto 0;padding-top:14px;border-top:1px solid var(--line-soft);display:flex;gap:16px;flex-wrap:wrap;font:400 14px "IBM Plex Sans",sans-serif;color:var(--muted)}

/* phone: the map keeps the top, the text passes below it */
@media (max-width:760px){
  body{font-size:18px}
  .topnav{display:none}
  html{scroll-padding-top:calc(52px + var(--vh0,1vh)*42)}
  .stage{top:44px;margin-top:44px;height:calc(var(--vh0,1vh)*42);border-bottom:1px solid var(--line-soft);z-index:3}
  .steps{margin-top:0}
  .step{min-height:auto;padding:16px 14px calc(var(--vh0,1vh)*16);display:block}
  .step-card,.hero-card,.panel{padding-bottom:64px}
  .step:first-child{min-height:auto;padding-top:18px}
  .step-card,.hero-card,.panel{width:auto;box-shadow:none}
  .legend{display:none}
  .mapctl{top:8px;right:auto;left:8px}
  .mapctl .icon-btn{display:none}
  .mapctl .btn.small{min-height:32px;padding:0 10px;font-size:12px}
  .card-pop{font-size:13.5px;width:min(290px,calc(100% - 16px))}
  .big .num{font-size:44px}
  .deck{font-size:19px}
  .explore{padding-bottom:30px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.stage canvas{transition:none}}
@media print{.stage,.topbar,.rail,.progress,.mapctl{display:none}.steps{margin:0}.step{min-height:0}}