@font-face { font-family:'IM Fell English'; font-style:normal; font-display:swap; src:url(fonts/fell.woff2) format('woff2'); }
@font-face { font-family:'IM Fell English'; font-style:italic; font-display:swap; src:url(fonts/fell-italic.woff2) format('woff2'); }
@font-face { font-family:'IM Fell Great Primer SC'; font-style:normal; font-display:swap; src:url(fonts/fell-sc.woff2) format('woff2'); }
:root { --ink:#2b1a0e; --vellum:#f1e2bd; --vellum-deep:#e2cd9c; --night:#1c120a; --edge:#7a5a2c; --red:#8e2c1c; --guide-h:64px; }
* { box-sizing:border-box; }
html,body { margin:0; height:100%; overflow:hidden; background:var(--night); color:var(--ink); font-family:"IM Fell English",Georgia,serif; -webkit-tap-highlight-color:transparent; }
#map { position:fixed; inset:0; background:var(--night); }
#stage { position:fixed; top:0; left:0; width:100%; height:100%; pointer-events:none; transform-origin:0 0; will-change:transform; }
#labels { position:absolute; inset:0; width:100%; height:100%; overflow:visible; pointer-events:none; transition:opacity .35s; }
body.flying #labels { opacity:0; }
body.flying .label { pointer-events:none; }
#life { position:absolute; inset:0; overflow:visible; }

.label { font-family:"IM Fell English",Georgia,serif; fill:var(--ink); stroke:rgba(246,233,201,.9); stroke-linejoin:round; paint-order:stroke; text-anchor:middle; cursor:pointer; pointer-events:auto; }
.label:hover,.label.on { fill:var(--red); }
.label.realm,.label.title { font-family:"IM Fell Great Primer SC","IM Fell English",serif; letter-spacing:.03em; }
.label.joke { font-style:italic; }
.label.sea { fill:#123a4e; font-style:italic; }
.label.cartouche { cursor:default; pointer-events:none; stroke:none; }
.label.cartouche.sub { font-style:italic; }

button,select,.link { font:inherit; color:var(--ink); cursor:pointer; }
button,select { background:var(--vellum); border:1px solid var(--edge); border-radius:3px; min-height:40px; padding:6px 11px; }
button:hover:not(:disabled),select:hover { background:#fff3d3; }
button:disabled { opacity:.35; cursor:default; }
:is(button,select,a,input):focus-visible { outline:2px solid var(--red); outline-offset:2px; }
.primary { background:var(--ink); color:var(--vellum); border-color:var(--ink); }
.primary:hover:not(:disabled) { background:#4a2d16; }
.grow { flex:1; }
.link { background:none; border:0; min-height:0; padding:0; color:var(--red); text-decoration:underline; text-underline-offset:3px; font-size:15px; }
.link:hover:not(:disabled) { background:none; color:#5e1a0e; }

#tools { position:fixed; top:max(10px,env(safe-area-inset-top)); right:10px; display:flex; gap:4px; }
#tools > * { box-shadow:0 2px 8px rgba(0,0,0,.35); }
#tools button { width:40px; padding:0; font-size:19px; }
#travel { max-width:150px; }
body.open #tools { right:auto; left:10px; }

#guide { position:fixed; left:0; right:0; bottom:0; height:calc(var(--guide-h) + env(safe-area-inset-bottom)); padding:9px 12px calc(9px + env(safe-area-inset-bottom)); display:flex; align-items:center; gap:12px; background:linear-gradient(180deg,var(--vellum),var(--vellum-deep)); border-top:1px solid var(--edge); box-shadow:0 -4px 18px rgba(0,0,0,.4); }
#guide > button { flex:none; height:44px; }
#prev { width:44px; padding:0; font-size:20px; }
#next { min-width:112px; font-size:17px; }
#progress { flex:1; min-width:0; }
#where { font-size:16px; line-height:1.15; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; margin-bottom:6px; }
#g-title { font-weight:400; }
#g-sub { font-style:italic; opacity:.75; margin-left:6px; }
#g-next { float:right; font-style:italic; opacity:.8; font-size:15px; }
@media (max-width:900px) { #g-next { display:none; } }
#strip { display:flex; gap:3px; height:10px; }
.era { display:flex; gap:1px; flex-basis:0; min-width:0; }
.stop { flex:1; min-width:0; height:10px; min-height:0; padding:0; border:0; border-radius:0; background:rgba(90,60,25,.25); cursor:pointer; position:relative; }
.stop::after { content:""; position:absolute; inset:-10px 0; }
.stop:hover:not(:disabled) { background:var(--edge); }
.stop.done { background:#9a7433; }
.stop.now { background:var(--red); }
.era.cold .stop:not(.done):not(.now) { background:rgba(58,115,160,.32); }
.era.cold .stop.done { background:#5e90b5; }

#placard { position:fixed; right:14px; top:14px; bottom:calc(var(--guide-h) + 14px); max-height:max-content; width:min(410px,calc(100vw - 28px)); overflow:auto; overscroll-behavior:contain; padding:18px 20px 14px; background:linear-gradient(160deg,#f6ead0,var(--vellum) 45%,var(--vellum-deep)); border:1px solid var(--edge); border-radius:3px; box-shadow:0 10px 30px rgba(0,0,0,.5); }
#p-head { position:sticky; top:-18px; z-index:2; margin:-18px -20px 8px; padding:16px 20px 7px; background:linear-gradient(180deg,#f6ead0 82%,rgba(246,234,208,0)); }
#close { position:absolute; top:8px; right:8px; min-height:36px; width:36px; padding:0; background:transparent; border:0; font-size:24px; }
#p-meta { margin:0 26px 4px 0; font-size:13px; letter-spacing:.09em; text-transform:uppercase; color:var(--red); }
#p-name { margin:0 26px 0 0; font:400 27px/1.1 "IM Fell Great Primer SC",serif; }
#p-text { margin:0 0 10px; font-size:18px; line-height:1.38; }
#p-why { margin:0 0 10px; padding-left:11px; border-left:2px solid var(--edge); font-size:16.5px; line-height:1.35; font-style:italic; }
#more-toggle { display:block; margin:0 0 8px; font-size:16px; }
#p-more p { margin:0 0 9px; font-size:16.5px; line-height:1.4; }
#p-more { padding-top:2px; }
#p-asof,#p-source { margin:0 0 5px; font-size:13.5px; font-style:italic; opacity:.85; overflow-wrap:anywhere; }
#p-source a { color:var(--red); }
#p-actions { display:flex; flex-wrap:wrap; gap:6px 12px; align-items:center; margin-top:12px; padding-top:9px; border-top:1px solid rgba(122,90,44,.35); font-size:15px; }
#auto-label { display:flex; gap:6px; align-items:center; cursor:pointer; }
#auto { accent-color:var(--red); margin:0; width:16px; height:16px; }
#demo-wrap { margin:0 0 10px; }
.small { min-height:34px; padding:4px 12px; font-size:16px; }
#demo-host { margin-top:10px; padding-top:10px; border-top:1px solid rgba(122,90,44,.35); }
.d-canvas { display:block; width:100%; height:auto; background:#f6ead0; border:1px solid rgba(122,90,44,.5); margin:7px 0; }
.d-msg { margin:6px 0; font-size:15.5px; line-height:1.3; min-height:2.6em; }
.d-note { margin:8px 0 0; font-size:13.5px; line-height:1.3; font-style:italic; opacity:.85; }
.d-btn { min-height:32px; padding:3px 11px; font-size:15px; }
.d-btn.on { background:var(--ink); color:var(--vellum); }
.d-choice { display:flex; gap:5px; }
.d-slider { display:block; font-size:14.5px; margin:6px 0; }
.d-slider span { display:block; }
.d-slider input { width:100%; accent-color:var(--red); height:22px; margin:2px 0 0; }
.d-check { display:flex; gap:6px; align-items:center; font-size:14.5px; cursor:pointer; }
.d-check input { accent-color:var(--red); margin:0; }
.k-rnn { color:var(--red); font-weight:700; } .k-lstm { color:#2d6a8f; font-weight:700; }
.d-select { width:100%; min-height:34px; font-size:14.5px; padding:3px 4px; }
.d-chips { display:flex; flex-wrap:wrap; gap:3px; margin:8px 0; }
.d-chip { min-height:30px; padding:1px 7px; font-size:15.5px; border:1px solid rgba(122,90,44,.5); }
.d-chip:hover:not(:disabled) { outline:1px solid var(--red); }
.d-chip.from { outline:2px solid var(--ink); outline-offset:1px; }
.d-chat { height:170px; overflow:auto; padding:8px; background:#f6ead0; border:1px solid rgba(122,90,44,.5); font-size:16px; line-height:1.3; }
.d-chat p { margin:0 0 6px; } .d-chat .her { font-family:ui-monospace,Menlo,Consolas,monospace; font-size:13.5px; } .d-chat .you { text-align:right; font-style:italic; }
.d-form { display:flex; gap:5px; margin-top:6px; }
.d-form input { flex:1; min-width:0; font:inherit; font-size:16px; padding:5px 7px; background:#fbf3df; border:1px solid var(--edge); border-radius:3px; color:var(--ink); }
#p-tech { margin:4px 0 10px; padding:9px 11px; background:rgba(43,26,14,.07); border-radius:3px; }
#p-tech h3 { margin:0 0 3px; font:400 13px "IM Fell English",serif; letter-spacing:.09em; text-transform:uppercase; color:var(--red); }
#p-tech-text { margin:0; font-size:15.5px; line-height:1.38; }
#p-papers { margin:0 0 8px; font-size:15px; }
#p-papers a,#p-source a { color:var(--red); margin-right:9px; }
#p-hook { margin:10px 0 0; font-size:16.5px; font-style:italic; color:#5a2415; }
#placard.wide { width:min(460px,calc(100vw - 28px)); }

.glow,.puff,.fog,.burst { position:absolute; pointer-events:none; border-radius:50%; }
.glow { background:radial-gradient(circle,rgba(255,176,70,.62),rgba(255,120,30,.22) 42%,rgba(255,120,30,0) 70%); animation:glow 3.2s ease-in-out infinite alternate; }
.glow.fire { background:radial-gradient(circle,rgba(255,190,90,.75),rgba(255,120,30,0) 68%); animation:flicker 1.3s ease-in-out infinite alternate; }
@keyframes glow { from { opacity:.35; transform:scale(.94); } to { opacity:1; transform:scale(1.08); } }
@keyframes flicker { 0% { opacity:.45; } 40% { opacity:1; } 70% { opacity:.65; } 100% { opacity:.95; } }
.puff { background:radial-gradient(circle,rgba(70,62,56,.5),rgba(70,62,56,0) 68%); opacity:0; animation:rise 9s linear infinite; }
.puff.pale { background:radial-gradient(circle,rgba(190,185,175,.42),rgba(190,185,175,0) 68%); }
@keyframes rise { 0% { opacity:0; transform:translate(0,0) scale(.4); } 15% { opacity:.9; } 100% { opacity:0; transform:translate(55%,-300%) scale(2.1); } }
.fog { background:radial-gradient(ellipse,rgba(244,233,207,.68),rgba(244,233,207,0) 68%); animation:drift 46s ease-in-out infinite alternate; }
.fog.dark { background:radial-gradient(ellipse,rgba(52,46,44,.34),rgba(52,46,44,0) 70%); }
@keyframes drift { from { transform:translateX(-14%) scale(1); opacity:.6; } to { transform:translateX(14%) scale(1.14); opacity:1; } }
.burst { width:.34em; height:.34em; margin:-.17em; background:transparent; color:#ffd872; font-size:var(--u,10px); opacity:0; box-shadow:0 -2.2em,1.56em -1.56em,2.2em 0,1.56em 1.56em,0 2.2em,-1.56em 1.56em,-2.2em 0,-1.56em -1.56em,.84em -2em,2em -.84em,2em .84em,.84em 2em,-.84em 2em,-2em .84em,-2em -.84em,-.84em -2em; animation:burst 4.6s ease-out infinite; }
@keyframes burst { 0%,62% { opacity:0; transform:scale(.05); } 66% { opacity:1; } 86% { opacity:.8; } 100% { opacity:0; transform:scale(1.05) translateY(.7em); } }
#life .sprite { position:absolute; pointer-events:none; will-change:transform; }
.sprite .body { position:absolute; inset:0; }
.sprite img { position:absolute; inset:0; width:100%; height:100%; }
.sprite.flap img:first-child { animation:flap-a var(--f,.7s) steps(1) infinite; }
.sprite.flap img:last-child { animation:flap-b var(--f,.7s) steps(1) infinite; }
@keyframes flap-a { 0% { opacity:1; } 50% { opacity:0; } }
@keyframes flap-b { 0% { opacity:0; } 50% { opacity:1; } }
.sprite.dragon { animation:dragon 46s ease-in-out infinite; }
@keyframes dragon { 0%,100% { transform:translate(-9.5em,-2.5em) scaleX(1); } 24% { transform:translate(0,-6.5em) scaleX(1); } 48% { transform:translate(9.5em,-2.5em) scaleX(1); } 50% { transform:translate(9.5em,-1.6em) scaleX(-1); } 74% { transform:translate(0,2em) scaleX(-1); } 98% { transform:translate(-9.5em,-1.6em) scaleX(-1); } }
.sprite.ship { animation:sail var(--d,120s) linear infinite; }
.sprite.ship .body { animation:bob 5.5s ease-in-out infinite alternate; transform-origin:50% 80%; }
@keyframes sail { 0% { opacity:0; transform:translate(0,0); } 5%,95% { opacity:1; } 100% { opacity:0; transform:translate(var(--tx,10em),var(--ty,-1em)); } }
@keyframes bob { from { transform:rotate(-1.5deg) translateY(.02em); } to { transform:rotate(1.5deg) translateY(-.03em); } }
.sprite.serpent { animation:surface 38s ease-in-out infinite; }
@keyframes surface { 0%,66% { opacity:0; transform:translateY(.7em); } 73%,92% { opacity:1; transform:translate(.25em,0); } 100% { opacity:0; transform:translate(.5em,.7em); } }
.sprite.gull { animation:gull var(--d,34s) linear infinite; }
@keyframes gull { 0% { opacity:0; transform:translate(0,0) scaleX(1); } 4%,44% { opacity:1; } 48% { opacity:1; transform:translate(var(--tx,14em),var(--ty,-3em)) scaleX(1); } 50% { transform:translate(var(--tx,14em),calc(var(--ty,-3em) + 1em)) scaleX(-1); } 96% { opacity:1; } 100% { opacity:0; transform:translate(0,1em) scaleX(-1); } }
@media (prefers-reduced-motion:reduce) { #life { display:none; } }
#era-card { position:fixed; left:0; right:0; top:calc((100% - var(--guide-h)) * .36); display:flex; flex-direction:column; align-items:center; gap:2px; padding:26px 16px 30px; text-align:center; color:#fff4d8; pointer-events:none; opacity:0; background:radial-gradient(ellipse 58% 62% at center,rgba(20,10,4,.86),rgba(20,10,4,.62) 55%,rgba(20,10,4,0)); text-shadow:0 2px 12px rgba(0,0,0,.95); }
@media (min-width:901px) { body.open #era-card { right:440px; } }
#era-card.show { animation:era 3s ease-in-out both; }
#era-card.cold { color:#def0ff; }
#era-years { font:italic 400 clamp(17px,2vw,24px) "IM Fell English",serif; opacity:.92; }
#era-name { font:400 clamp(34px,6vw,76px)/1.05 "IM Fell Great Primer SC",serif; }
#era-line { max-width:640px; font:italic 400 clamp(17px,2vw,24px)/1.25 "IM Fell English",serif; }
@keyframes era { 0% { opacity:0; transform:translateY(8px); } 16%,76% { opacity:1; transform:none; } 100% { opacity:0; transform:translateY(-6px); } }
#opening { position:fixed; inset:0; z-index:5; display:flex; flex-direction:column; align-items:center; justify-content:center; padding:0 20px var(--guide-h); text-align:center; color:#fff1cf; pointer-events:none; background:radial-gradient(ellipse at center,rgba(15,7,2,.55),rgba(15,7,2,.82)); animation:opening 4.4s ease-in both; text-shadow:0 3px 20px #000; }
#opening h1 { margin:0; font:400 clamp(52px,10vw,132px)/1 "IM Fell Great Primer SC",serif; }
#opening p { margin:12px 0 0; font:italic 400 clamp(18px,2.4vw,30px)/1.2 "IM Fell English",serif; }
@keyframes opening { 0%,48% { opacity:1; } 100% { opacity:0; } }
#finale { position:fixed; left:50%; bottom:calc(var(--guide-h) + 18px); transform:translateX(-50%); width:min(540px,calc(100vw - 24px)); padding:20px 24px 18px; background:linear-gradient(160deg,#f6ead0,var(--vellum) 45%,var(--vellum-deep)); border:1px solid var(--edge); border-radius:3px; box-shadow:0 10px 34px rgba(0,0,0,.55); font-size:18px; line-height:1.34; }
#finale h2 { margin:0 0 7px; font:400 28px/1.12 "IM Fell Great Primer SC",serif; }
#finale p { margin:0 0 8px; }
#finale-more { font-style:italic; }
.finale-actions { display:flex; flex-wrap:wrap; align-items:center; gap:9px 12px; margin-top:12px; }
.d-big { font-family:ui-monospace,Menlo,Consolas,monospace; font-size:13px; line-height:1.34; white-space:pre-wrap; overflow-wrap:anywhere; height:150px; overflow:auto; padding:8px; background:#f6ead0; border:1px solid rgba(122,90,44,.5); }
.d-big .seed { font-weight:700; }
.d-input { width:100%; box-sizing:border-box; font:inherit; font-size:16px; padding:5px 7px; background:#fbf3df; border:1px solid var(--edge); border-radius:3px; color:var(--ink); }
.d-steps { display:flex; flex-wrap:wrap; gap:4px; }
.d-steps .d-btn { padding:3px 8px; font-size:14px; }
.d-row { display:flex; gap:6px; align-items:center; margin:6px 0; }
.d-bars { margin:7px 0; font-size:14.5px; }
.d-bar { display:grid; grid-template-columns:6.2em 1fr 2.6em; gap:7px; align-items:center; min-height:20px; }
.d-bar i { display:block; height:11px; background:var(--red); }
.d-bar code { font-family:ui-monospace,Menlo,Consolas,monospace; font-size:12.5px; }
.d-bar b { font-weight:400; text-align:right; font-size:13px; }
.d-eq { display:flex; flex-wrap:wrap; align-items:center; gap:4px; margin:7px 0; font-size:18px; }
.d-eq input { width:6.2em; min-width:0; flex:1 1 4.4em; }
.d-ctx { font-family:ui-monospace,Menlo,Consolas,monospace; font-size:13px; white-space:pre-wrap; overflow-wrap:anywhere; padding:6px; min-height:4.6em; background:#f6ead0; border:1px solid rgba(122,90,44,.5); }
.d-label { margin:8px 0 2px; font-size:13px; letter-spacing:.07em; text-transform:uppercase; color:var(--red); }
#route { position:absolute; inset:0; width:100%; height:100%; overflow:visible; pointer-events:none; }
#route path { fill:none; stroke-linecap:round; }
#r-case { stroke:rgba(248,236,206,.55); }
#r-done,#r-now { stroke:#9c2616; }
#r-done { opacity:.4; }
#route.whole #r-done { opacity:.95; stroke-width:2.8px !important; stroke-dasharray:9 7 !important; }
#route.whole #r-case { stroke-width:6px !important; stroke:rgba(250,240,212,.5); }
#r-next { stroke:#9c2616; opacity:.5; }
body.flying #r-next { opacity:0; }
#highlights { margin-left:8px; padding:0; min-height:0; font-size:15px; }
.stop.skip { opacity:.32; }
[hidden] { display:none !important; }
dialog { max-width:480px; padding:22px; color:var(--ink); background:var(--vellum); border:1px solid var(--edge); font-size:18px; line-height:1.38; }
dialog::backdrop { background:rgba(15,8,3,.65); }
dialog h2 { margin:0 0 10px; font:400 26px "IM Fell Great Primer SC",serif; }
.noscript { position:fixed; inset:40% 20px auto; text-align:center; color:var(--vellum); }

@media (max-width:640px) {
  #tools select { width:122px; padding:6px 2px; font-size:15px; }
  body.pre #g-title { display:none; }
  #highlights { margin-left:0; white-space:normal; }
  #finale { font-size:16.5px; padding:15px 16px; } #finale h2 { font-size:23px; }
  :root { --guide-h:66px; }
  #placard { left:8px; right:8px; top:auto; bottom:calc(var(--guide-h) + env(safe-area-inset-bottom) + 8px); width:auto; max-height:44dvh; padding:14px 15px 10px; }
  #placard.expanded { max-height:68dvh; }
  #p-name { font-size:21px; }
  #p-head { top:-14px; margin:-14px -15px 6px; padding:11px 15px 5px; }
  #highlights { font-size:14px; } #g-sub { display:none; }
  #p-actions { flex-wrap:wrap; row-gap:4px; }
  #p-text { font-size:16.5px; margin-bottom:8px; }
  #p-why,#p-more p { font-size:15.5px; }
  #guide { padding-left:8px; padding-right:8px; gap:8px; }
  #next { min-width:0; padding:6px 12px; }
  #where { font-size:14.5px; }
  #g-sub { display:none; }
  #strip { height:8px; }
  .stop { height:8px; pointer-events:none; }
  #travel { max-width:112px; }
  body.open #tools { left:auto; right:10px; }
}
@media (prefers-reduced-motion:reduce) { * { scroll-behavior:auto !important; } }