@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Noto+Serif:wght@600;700&family=IBM+Plex+Mono:wght@500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root{
  --ink:#211B14;
  --ink-soft:#534633;
  --paper:#EDE5CF;
  --paper-2:#E2D7B8;
  --paper-3:#F7F2E4;
  --stamp:#9A3A2C;
  --archive:#1F4B49;
  --gold:#AD8530;
  --muted:#867A5E;
  --rule:rgba(33,27,20,.16);
}
html[data-theme="dark"]{
  --ink:#F2E9D3;
  --ink-soft:#C9BB94;
  --paper:#15110B;
  --paper-2:#1C160E;
  --paper-3:#1F1810;
  --stamp:#C9534A;
  --archive:#4FA89D;
  --gold:#D4A847;
  --muted:#9C8E6E;
  --rule:rgba(242,233,211,.14);
}
*{box-sizing:border-box;}
html,body{
  margin:0;
  font-family:'IBM Plex Sans', sans-serif;
  background-color:var(--paper);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='matrix' values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.05 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  color:var(--ink);
  transition:background-color .25s ease, color .25s ease;
}
a{color:var(--stamp);}
a:hover{text-decoration:underline;}
::selection{background:var(--gold); color:var(--ink);}
:focus-visible{outline:2px solid var(--gold); outline-offset:2px;}

.site-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
  padding:20px 28px;
  max-width:1180px;
  margin:0 auto;
  border-bottom:1px solid var(--rule);
}
.site-nav .brand{
  display:inline-flex;
  align-items:center;
  font-family:'IBM Plex Mono', monospace;
  font-weight:600;
  font-size:.85em;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--ink);
}
.brand-mark{
  width:20px;
  height:20px;
  margin-right:7px;
}
.theme-toggle{
  font-family:'IBM Plex Mono', monospace;
  font-size:.7em;
  letter-spacing:.05em;
  text-transform:uppercase;
  font-weight:600;
  color:var(--ink-soft);
  background:var(--paper-2);
  border:1.5px solid var(--gold);
  border-radius:3px;
  padding:6px 12px;
  cursor:pointer;
  transition:color .15s ease, border-color .15s ease;
}
.theme-toggle:hover{color:var(--stamp); border-color:var(--stamp);}

.lang-switch{
  display:flex;
  align-items:center;
  gap:2px;
  border:1.5px solid var(--gold);
  border-radius:3px;
  padding:2px;
  font-family:'IBM Plex Mono', monospace;
  font-size:.68em;
  letter-spacing:.04em;
  text-transform:uppercase;
}
.lang-switch .current,
.lang-switch a{
  display:inline-block;
  padding:5px 8px;
  border-radius:2px;
  line-height:1;
}
.lang-switch .current{
  background:var(--stamp);
  color:var(--paper);
  font-weight:700;
}
.lang-switch a{
  color:var(--ink-soft);
  text-decoration:none;
}
.lang-switch a:hover{
  color:var(--ink);
  background:var(--rule);
}
.lang-switch a:hover{color:var(--stamp); text-decoration:underline;}
.site-nav .links{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  justify-content:flex-end;
  font-family:'IBM Plex Mono', monospace;
  font-size:.72em;
  letter-spacing:.04em;
  text-transform:uppercase;
}
.site-nav .links a{
  color:var(--ink-soft);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.site-nav .links a:hover{
  color:var(--stamp);
  border-bottom-color:var(--stamp);
  text-decoration:none;
}

.nav-drop{
  position:relative;
  padding-bottom:10px;
  margin-bottom:-10px;
}
.nav-drop-trigger{
  display:inline-block;
}
.nav-drop-panel{
  display:none;
  flex-direction:column;
  position:absolute;
  top:100%;
  left:50%;
  transform:translateX(-50%);
  min-width:210px;
  background:var(--paper-3);
  border:1px solid var(--rule);
  border-radius:3px;
  padding:6px;
  box-shadow:0 16px 32px rgba(33,27,20,.2);
  z-index:20;
  text-transform:none;
  letter-spacing:0;
}
.nav-drop-panel a{
  display:block;
  padding:8px 12px;
  color:var(--ink-soft) !important;
  border-bottom:none !important;
  border-radius:2px;
  white-space:nowrap;
}
.nav-drop-panel a:hover{
  color:var(--stamp) !important;
  background:rgba(0,0,0,.04);
}
.nav-drop:hover .nav-drop-panel,
.nav-drop:focus-within .nav-drop-panel,
.nav-drop.open .nav-drop-panel{
  display:flex;
}

.hero{
  max-width:740px;
  margin:0 auto;
  padding:56px 28px 16px;
  text-align:left;
}
.hero h1{
  position:relative;
  font-family:'Fraunces', 'Noto Serif', serif;
  font-weight:600;
  font-size:clamp(1.9em, 4.6vw, 3em);
  line-height:1.08;
  letter-spacing:-.01em;
  margin:0 0 20px;
  padding-top:26px;
}
.hero h1::before{
  content:'';
  position:absolute;
  top:0; left:0;
  width:46px; height:4px;
  background:var(--stamp);
}
.hero p.lead{
  font-size:1.05em;
  line-height:1.65;
  color:var(--ink-soft);
  max-width:560px;
  margin:0;
}

.content{
  max-width:700px;
  margin:0 auto;
  padding:20px 28px 10px;
}
.content h2{
  font-family:'Fraunces', 'Noto Serif', serif;
  font-weight:600;
  font-size:1.32em;
  color:var(--archive);
  margin:46px 0 16px;
  padding-bottom:9px;
  border-bottom:1px solid var(--rule);
}
.content p{
  line-height:1.75;
  color:var(--ink-soft);
  margin:0 0 14px;
}

.question-list{
  list-style:none;
  counter-reset:qnum;
  margin:18px 0 36px;
  padding:6px 0;
  background:var(--paper-3);
  border:1px solid var(--rule);
  border-radius:3px;
  box-shadow:0 10px 26px rgba(33,27,20,.10);
}
.question-list li{
  counter-increment:qnum;
  position:relative;
  padding:15px 22px 15px 58px;
  border-bottom:1px dashed var(--rule);
  font-family:'Fraunces', 'Noto Serif', serif;
  font-size:1.04em;
  line-height:1.5;
  color:var(--ink);
}
.question-list li::before{
  content:counter(qnum, decimal-leading-zero);
  position:absolute;
  left:20px; top:17px;
  font-family:'IBM Plex Mono', monospace;
  font-size:.68em;
  letter-spacing:.04em;
  color:var(--muted);
}
.question-list li:last-child{border-bottom:none;}

.cta{
  max-width:740px;
  margin:48px auto 16px;
  padding:0 28px;
  text-align:center;
}
.cta h2{
  font-family:'Fraunces', 'Noto Serif', serif;
  font-weight:600;
  color:var(--ink);
  font-size:1.4em;
  margin-bottom:6px;
}
.cta p{
  font-family:'IBM Plex Mono', monospace;
  font-size:.78em;
  text-transform:uppercase;
  letter-spacing:.06em;
  color:var(--muted);
  margin-bottom:20px;
}
.game-frame-wrap{
  border:6px solid var(--ink);
  border-radius:4px;
  overflow:hidden;
  box-shadow:0 22px 44px rgba(33,27,20,.28);
}
.game-frame-wrap iframe{
  width:100%;
  height:760px;
  border:none;
  display:block;
}
.fullscreen-link{
  display:inline-block;
  margin-top:16px;
  font-family:'IBM Plex Mono', monospace;
  font-size:.78em;
  text-transform:uppercase;
  letter-spacing:.05em;
  color:var(--ink-soft);
}

.topic-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
  gap:18px;
  max-width:900px;
  margin:36px auto 16px;
  padding:0 28px;
}
.topic-card{
  position:relative;
  background:var(--paper-3);
  border:1px solid var(--rule);
  border-radius:3px;
  padding:22px 20px 18px;
  display:block;
  box-shadow:0 1px 0 var(--rule);
  transition:transform .15s ease, box-shadow .15s ease;
}
.topic-card::before{
  content:'';
  position:absolute;
  top:-1px; left:18px;
  width:28px; height:5px;
  background:var(--gold);
}
.topic-card:hover{
  transform:translateY(-3px);
  box-shadow:0 14px 26px rgba(33,27,20,.16);
}
.topic-card .t-title{
  font-family:'Fraunces', 'Noto Serif', serif;
  font-weight:600;
  margin-bottom:6px;
  color:var(--ink);
  font-size:1.04em;
}
.topic-card .t-desc{
  font-size:.86em;
  color:var(--muted);
  line-height:1.45;
}

.placeholder-note{
  font-family:'IBM Plex Mono', monospace;
  font-size:.75em;
  text-transform:uppercase;
  letter-spacing:.04em;
  color:var(--muted);
  text-align:center;
  margin:22px auto;
  max-width:600px;
}

.site-footer{
  max-width:1180px;
  margin:56px auto 0;
  padding:24px 28px 44px;
  border-top:1px solid var(--rule);
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  justify-content:space-between;
  font-family:'IBM Plex Mono', monospace;
  font-size:.72em;
  letter-spacing:.04em;
  text-transform:uppercase;
  color:var(--muted);
}
.site-footer .links{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.site-footer .links{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.site-footer a{color:var(--muted);}
.site-footer a:hover{color:var(--stamp);}

@media (prefers-reduced-motion: reduce){
  .topic-card{transition:none;}
}

@media (max-width:600px){
  .hero h1{font-size:1.7em;}
  .question-list li{padding-left:50px;}
  .game-frame-wrap iframe{height:640px;}
}