:root{
  --paper:#f3ecdf; --paper2:#ece2cf; --ink:#201a12; --muted:#6b5f4c;
  --line:#d8cbae; --accent:#7a2e1d; --accent2:#1d4a5a; --gold:#b98a2f;
  --card:#faf6ec; --ok:#2e6b34; --bad:#8a2be2;
  --serif:Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
[data-theme="dark"]{
  --paper:#14110d; --paper2:#1e1913; --ink:#ece2cf; --muted:#a89a80;
  --line:#3a3226; --accent:#e08a6d; --accent2:#7fc4d8; --gold:#d8a94e;
  --card:#1b1611; --ok:#7fd08a; --bad:#c9a0f2;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--serif);line-height:1.6;font-size:1.06rem}
.wrap{max-width:44rem;margin:0 auto;padding:0 1.2rem}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--paper);padding:.5rem 1rem;z-index:99}
.skip:focus{left:0}
a{color:var(--accent)}
[data-theme="dark"] a{color:var(--accent)}
h1,h2,h3{line-height:1.2;text-wrap:balance}
.kicker{font-family:var(--sans);text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;color:var(--muted);margin:0 0 .6rem}
/* top bar */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:.9rem;padding:.45rem 1rem;background:color-mix(in srgb,var(--paper) 92%,transparent);border-bottom:1px solid var(--line);backdrop-filter:blur(6px);font-family:var(--sans);font-size:.92rem}
.topbar .home{color:var(--ink);text-decoration:none;font-weight:700;white-space:nowrap}
.topnav{display:flex;gap:.8rem;overflow-x:auto;scrollbar-width:none}
.topnav::-webkit-scrollbar{display:none}
.topnav a{color:var(--muted);text-decoration:none;white-space:nowrap}
.topnav a[aria-current]{color:var(--ink);font-weight:700}
.spacer{flex:1}
.langmenu{position:relative}
.langmenu summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:.3rem;color:var(--ink)}
.langmenu summary::-webkit-details-marker{display:none}
.langmenu ul{position:absolute;right:0;top:130%;margin:0;padding:.4rem .2rem;list-style:none;background:var(--card);border:1px solid var(--line);border-radius:.5rem;min-width:9rem}
.langmenu li a{display:block;padding:.35rem .8rem;color:var(--ink);text-decoration:none}
.langmenu li a[aria-current]{font-weight:700}
.icon-btn{background:none;border:1px solid var(--line);border-radius:.5rem;color:var(--ink);cursor:pointer;padding:.28rem .45rem;line-height:0}
svg[hidden]{display:none}
/* rail */
.rail{position:fixed;right:.6rem;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:.55rem;z-index:40}
.rail-dot{display:flex;align-items:center;gap:.4rem;text-decoration:none}
.rail-label{font-family:var(--sans);font-size:.72rem;color:var(--muted);opacity:0;transition:opacity .2s;white-space:nowrap}
.rail-dot:hover .rail-label,.rail-dot.active .rail-label{opacity:1}
.rail-dot .dot{width:.6rem;height:.6rem;border-radius:50%;border:2px solid var(--muted);flex:none}
.rail-dot.active .dot{background:var(--accent);border-color:var(--accent)}
@media (max-width:70rem){.rail{display:none}}
/* hero */
.hero{padding:3rem 1.2rem 2rem;max-width:60rem;margin:0 auto}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);margin:.2rem 0 .8rem}
.deck{font-size:1.25rem;max-width:38rem}
.byline{font-family:var(--sans);font-size:.85rem;color:var(--muted)}
.hero-doc{margin:2rem auto;max-width:52rem}
.cast-wrap{max-width:52rem;margin:0 auto}
.cast-heading{font-family:var(--sans);font-size:.85rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.cast{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:.7rem}
.cast a{display:flex;flex-direction:column;gap:.1rem;background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:.8rem .9rem;text-decoration:none;color:var(--ink)}
.cast a:hover{border-color:var(--accent)}
.seal{display:inline-flex;align-items:center;justify-content:center;width:1.9rem;height:1.9rem;border-radius:50%;background:var(--accent);color:var(--paper);font-family:var(--sans);font-weight:700;font-size:.9rem}
.seal-lg{width:2.6rem;height:2.6rem;font-size:1.2rem}
.cast-name{font-weight:700}
.cast-years{font-family:var(--sans);font-size:.8rem;color:var(--muted)}
/* chapters */
.chapter{max-width:44rem;margin:0 auto;padding:2.5rem 1.2rem;border-top:1px solid var(--line)}
.ch-head{text-align:center;margin-bottom:1rem}
.ch-num{font-family:var(--sans);color:var(--muted);margin:0}
.ch-head h2{font-size:2rem;margin:.4rem 0}
.ch-dates{font-family:var(--sans);color:var(--muted)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(9rem,1fr));gap:.6rem;margin:1.2rem 0;padding:0}
.stats div{background:var(--card);border:1px solid var(--line);border-radius:.5rem;padding:.5rem .7rem}
.stats dt{font-family:var(--sans);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.stats dd{margin:.1rem 0 0;font-weight:700}
.figure{margin:1.6rem auto}
.figure img{width:100%;height:auto;display:block;border-radius:.5rem;border:1px solid var(--line);background:var(--paper2)}
.figure figcaption{font-family:var(--sans);font-size:.85rem;color:var(--muted);margin-top:.45rem}
.credit{white-space:normal}
.scene{margin:1.6rem 0;padding:1rem 1.2rem;border-left:4px solid var(--gold);background:var(--card);border-radius:0 .5rem .5rem 0}
.scene p{margin:0 0 .4rem;font-style:italic}
.scene cite{font-family:var(--sans);font-size:.85rem;color:var(--muted);font-style:normal}
.meanwhile{background:var(--paper2);border-radius:.5rem;padding:.8rem 1rem;font-size:.98rem}
.meanwhile-label{font-family:var(--sans);font-weight:700;text-transform:uppercase;font-size:.78rem;letter-spacing:.08em;color:var(--accent)}
/* patent centerpiece */
.patent{border-top:1px solid var(--line);padding:2.5rem 0;background:var(--paper2)}
.doc-pair{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:1rem 0}
@media (max-width:46rem){.doc-pair{grid-template-columns:1fr}}
.mech{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin-top:1rem}
@media (max-width:56rem){.mech{grid-template-columns:1fr}}
.plines{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.7rem}
.pline{background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:.7rem .9rem}
.pline.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.pline-head{display:flex;gap:.6rem;align-items:baseline;width:100%;background:none;border:0;color:var(--ink);font-family:var(--serif);font-size:1.05rem;font-weight:700;cursor:pointer;text-align:left;padding:0}
.pline-num{font-family:var(--sans);background:var(--ink);color:var(--paper);border-radius:50%;width:1.5rem;height:1.5rem;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem;flex:none}
.pline-text{margin:.5rem 0 0}
.dia{background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:1rem;text-align:center}
.pendiagram{width:100%;max-width:22rem;height:auto}
.pendiagram .part rect,.pendiagram .part path{fill:var(--paper2);stroke:var(--ink);stroke-width:2}
.pendiagram .part line{stroke:var(--ink);stroke-width:2}
.pendiagram text{font-family:var(--sans);font-size:15px;font-weight:700;fill:var(--ink);text-anchor:middle}
.pendiagram .part.lit rect,.pendiagram .part.lit path{fill:var(--gold);stroke:var(--accent)}
.pendiagram .part.lit text{fill:#14110d}
.pendiagram .ink{fill:var(--accent2);stroke:none;transition:y 2s linear,height 2s linear}
.pendiagram .tube-body{transition:transform .3s}
.pendiagram.squeeze .tube-body{transform:scaleX(.8);transform-box:fill-box;transform-origin:center}
.pendiagram .fingers path{stroke:var(--muted);stroke-width:3;fill:none;opacity:0;transition:opacity .3s}
.pendiagram.squeeze .fingers path{opacity:1}
.pendiagram .drop{fill:var(--accent2);opacity:0}
.pendiagram.squeeze .drop{animation:fall 2.2s linear forwards}
.pendiagram.squeeze .ink{y:200px;height:70px}
.pendiagram .written{stroke:var(--accent2);stroke-width:3;opacity:0}
.pendiagram.squeeze .written{opacity:1;transition:opacity .5s 1.8s}
.pendiagram .ghost{stroke:var(--line);stroke-width:1}
@keyframes fall{0%{opacity:0;transform:translateY(0)}15%{opacity:1}85%{opacity:1}100%{opacity:0;transform:translateY(96px)}}
.squeeze{margin-top:.8rem}
.squeeze-done{min-height:1.4em;font-family:var(--sans);color:var(--ok);font-weight:700}
.feed-note{text-align:left;font-size:.92rem;border-top:1px dashed var(--line);padding-top:.7rem}
/* game */
.game{padding:2.5rem 0;border-top:1px solid var(--line)}
.section-intro{color:var(--muted)}
.cards{list-style:none;margin:1.2rem 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:1rem;display:flex;flex-direction:column;gap:.5rem}
.card-num{font-family:var(--sans);color:var(--muted);margin:0}
.card-place{margin:0;font-size:1.2rem}
.card-situation{margin:0}
.card-buttons{display:flex;flex-direction:column;gap:.5rem;margin-top:.4rem}
.card-buttons button{min-height:44px;font-family:var(--sans);font-size:.95rem;background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:.5rem;cursor:pointer;padding:.6rem}
.card-buttons button:hover{border-color:var(--accent)}
.card.answered .card-buttons button{opacity:.55}
.card.right{border-color:var(--ok)}
.card.wrong{border-color:var(--bad)}
.card-answer{margin:.4rem 0 0}
.card-answer summary{cursor:pointer;font-family:var(--sans);color:var(--accent);font-weight:700}
.card-verdict{font-weight:700}
.card.right .card-verdict{color:var(--ok)}
.card.wrong .card-verdict{color:var(--bad)}
.scoreboard{text-align:center;margin-top:1rem}
.score{font-family:var(--sans);font-weight:700;font-size:1.1rem}
.score-done{font-family:var(--sans)}
.score-actions{display:flex;gap:.6rem;justify-content:center;margin-top:.6rem}
.btn{font-family:var(--sans);background:var(--accent);color:#fff;border:1px solid var(--accent);border-radius:.5rem;padding:.6rem 1.1rem;cursor:pointer;text-decoration:none;display:inline-block;min-height:44px}
.btn.ghost{background:none;color:var(--accent);border-color:var(--accent)}
[data-theme="dark"] .btn{color:#14110d;background:var(--accent)}
[data-theme="dark"] .btn.ghost{background:none;color:var(--accent)}
.btn .hint{opacity:.75;font-size:.85em}
/* numbers, myths, sources */
.numbers{padding:2.5rem 0;border-top:1px solid var(--line);background:var(--paper2)}
.num-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:.8rem;margin:1rem 0 0}
.num-grid div{background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:.8rem}
.num-grid dt{font-size:1.8rem;font-weight:700}
.num-grid dd{margin:.2rem 0 0;font-family:var(--sans);font-size:.88rem;color:var(--muted)}
.myths{padding:2.5rem 0;border-top:1px solid var(--line)}
.myth-list{list-style:none;margin:1rem 0 0;padding:0;display:flex;flex-direction:column;gap:1rem;counter-reset:myth}
.myth-list li{background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:1rem 1.1rem}
.myth-list h3{margin:0 0 .4rem}
.myth-list h3::before{counter-increment:myth;content:counter(myth) ". ";color:var(--accent)}
.myth-list p{margin:0}
.sources{padding:2.5rem 0;border-top:1px solid var(--line)}
.src-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1rem;margin-top:1rem}
.src-group h3{font-family:var(--sans);font-size:.9rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 .4rem}
.src-group ul{margin:0;padding-left:1.1rem}
.src-group li{margin-bottom:.35rem}
.img-heading{margin-top:1.6rem}
.img-credits{font-family:var(--sans);font-size:.85rem;color:var(--muted)}
.site-footer{border-top:1px solid var(--line);padding:1.2rem;text-align:center;font-family:var(--sans);font-size:.9rem;color:var(--muted)}
.nf-main{padding:4rem 1.2rem;text-align:center}
@media (max-width:46rem){
  body{font-size:1rem}
  .topnav{display:none}
  .hero{padding-top:2rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}