:root{
  --night:#0d1c1a; --deep:#132a26; --mist:#a9bdb2; --mist-soft:#6f877c;
  --gold:#d9b25e; --gold-hi:#f6dc96; --ember:#f0763a;
  --parchment:#ede2c6; --parchment-edge:#cdb98a; --ink:#2b2218; --ink-soft:#6a5a44;
  --bad:#a8321d;
  --display:"Cormorant Garamond",Georgia,serif;
  --body:"Alegreya Sans",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{color-scheme:dark;scroll-behavior:smooth}
body{
  margin:0;min-height:100vh;color:var(--mist);font:400 1.06rem/1.6 var(--body);
  background:
    radial-gradient(120% 70% at 50% 100%, #1f4a3f 0%, transparent 60%),
    radial-gradient(80% 50% at 50% 30%, #17332d 0%, transparent 70%),
    var(--night);
  background-attachment:fixed;
}
#embers{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.hero,.gate,.foot{position:relative;z-index:1}
a{color:var(--gold-hi)}
:focus-visible{outline:2px solid var(--gold-hi);outline-offset:3px}

/* ---------- hero ---------- */
.hero{min-height:92vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:3rem 1rem 4rem}
.hero-short{min-height:auto;padding:5rem 1rem 2rem}
.sigil{filter:drop-shadow(0 0 18px rgba(240,118,58,.45));margin-bottom:.5rem}
.realm{
  margin:0;font:600 clamp(4.5rem,17vw,11.5rem)/.9 var(--display);letter-spacing:.06em;
  padding-left:.06em; /* balance the tracking */
  background:linear-gradient(180deg,var(--gold-hi) 10%,var(--gold) 55%,#8a6526 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 30px rgba(240,118,58,.28));
}
.small-realm{font-size:clamp(2.6rem,9vw,5rem);letter-spacing:.02em}
.tagline{margin:.9rem auto 0;max-width:34ch;font:italic 500 clamp(1.25rem,3vw,1.6rem)/1.35 var(--display);color:#d6e1da}
.status{display:inline-flex;align-items:center;gap:.6rem;margin:2.2rem 0 0;padding:.5rem 1.1rem;
  border:1px solid rgba(217,178,94,.35);border-radius:999px;background:rgba(13,28,26,.55);font-weight:500}
.flame{width:.7rem;height:.7rem;border-radius:50%;background:var(--mist-soft)}
.status.live .flame{background:var(--ember);box-shadow:0 0 10px 2px rgba(240,118,58,.7);animation:flicker 2.4s infinite}
.status.waking .flame{background:var(--gold)}
.status.live{color:#f3e7c9}
@keyframes flicker{0%,100%{opacity:1}45%{opacity:.65}60%{opacity:.95}}
.scroll-cue{margin-top:2.6rem;color:var(--mist);text-decoration:none;font-size:.95rem;border-bottom:1px solid var(--mist-soft);padding-bottom:2px}
.scroll-cue:hover{color:var(--gold-hi);border-color:var(--gold)}

/* ---------- gate (two columns) ---------- */
.gate{max-width:1080px;margin:0 auto;padding:2rem 1rem 5rem;display:grid;gap:3rem;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:start}
.gate.single{grid-template-columns:minmax(0,640px);justify-content:center}
h2{font:600 2.3rem/1.1 var(--display);margin:0 0 .4rem;color:var(--gold-hi)}
h3{font:600 1.35rem/1.25 var(--display);margin:0 0 .2rem;color:#f0e6cc}

/* the charter: parchment you sign */
.charter{
  color:var(--ink);padding:2.4rem 2.4rem 2rem;border-radius:4px;
  background:
    radial-gradient(140% 90% at 50% 0%, #f6edd6 0%, transparent 70%),
    radial-gradient(60% 40% at 100% 100%, rgba(150,110,50,.18), transparent),
    radial-gradient(60% 40% at 0% 100%, rgba(150,110,50,.14), transparent),
    var(--parchment);
  box-shadow:0 0 0 1px var(--parchment-edge), 0 0 0 7px rgba(205,185,138,.12), 0 30px 60px -20px rgba(0,0,0,.7);
}
.charter h2{color:#5b3b14}
.lede{margin:0 0 1.4rem;color:var(--ink-soft);max-width:46ch}
form{display:grid;gap:1.05rem}
label{display:grid;align-content:start;min-width:0;gap:.3rem;font-weight:700;font-size:.95rem;color:#3d2f1f}
.opt{font-weight:400;color:var(--ink-soft)}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
input{
  width:100%;min-width:0;font:500 1.08rem var(--body);color:var(--ink);padding:.62rem .75rem;border-radius:3px;
  border:1px solid #b9a271;background:rgba(255,252,242,.75);
}
input:focus{outline:none;border-color:#7a4a17;box-shadow:0 0 0 3px rgba(240,118,58,.28)}
input[aria-invalid="true"]{border-color:var(--bad)}
.code input{font-family:var(--display);font-size:1.35rem;letter-spacing:.08em;text-align:center;
  border-style:dashed;border-width:2px;background:rgba(255,248,226,.9)}
.hint,.err{font-weight:400;font-size:.88rem}
.hint{color:var(--ink-soft)}
.err{color:var(--bad);font-weight:500}
.err.banner{background:rgba(168,50,29,.1);padding:.6rem .8rem;border-left:3px solid var(--bad);margin:0 0 1rem}
button{
  margin-top:.4rem;font:600 1.4rem var(--display);letter-spacing:.02em;color:#2a1405;cursor:pointer;
  padding:.75rem 1rem;border:0;border-radius:3px;
  background:linear-gradient(180deg,#ffd27f,#f0963d 55%,#c9612a);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 6px 18px -6px rgba(201,97,42,.8);
}
button:hover{filter:brightness(1.07)}
button:active{transform:translateY(1px)}
.fine{margin:.2rem 0 0;font-size:.85rem;color:var(--ink-soft)}

/* the path: steps on the night side */
.path{padding-top:.6rem}
.path ol{list-style:none;counter-reset:step;margin:1.2rem 0 0;padding:0;display:grid;gap:1.6rem}
.path li{counter-increment:step;position:relative;padding-left:3.4rem}
.path li::before{
  content:counter(step);position:absolute;left:0;top:-.1rem;width:2.4rem;height:2.4rem;border-radius:50%;
  display:grid;place-items:center;font:600 1.3rem/1 var(--display);color:var(--gold-hi);
  border:1px solid rgba(217,178,94,.55);background:rgba(13,28,26,.7);
}
.path li:not(:last-child)::after{content:"";position:absolute;left:1.2rem;top:2.5rem;bottom:-1.5rem;width:1px;
  background:linear-gradient(var(--gold),transparent);opacity:.4}
.path p{margin:.15rem 0 0}
.path li.end::after{display:none}

/* platform switch: plain radios, CSS decides which steps show */
.os{border:0;margin:1rem 0 0;padding:0;display:flex;flex-wrap:wrap;align-items:center;gap:.4rem}
.os legend{float:left;margin-right:.6rem;font-size:.95rem;color:var(--mist)}
.os input{position:absolute;opacity:0;width:1px;height:1px}
.os label{cursor:pointer;padding:.35rem .95rem;border-radius:999px;font-weight:500;font-size:.95rem;
  color:var(--mist);border:1px solid rgba(217,178,94,.35)}
.os label:hover{color:var(--gold-hi)}
.os input:checked + label{color:var(--night);background:var(--gold);border-color:var(--gold)}
.os input:focus-visible + label{outline:2px solid var(--gold-hi);outline-offset:3px}
.only-deck{display:none}
.path:has(#os-deck:checked) .only-deck{display:block}
.path:has(#os-deck:checked) .only-win{display:none}
.cmd{position:relative;margin:.7rem 0 .3rem}
.cmd pre{margin:0;padding-right:5.5rem;white-space:pre-wrap;overflow-wrap:anywhere;font-size:.9rem}
.copy{position:absolute;top:.45rem;right:.45rem;margin:0;padding:.3rem .7rem;font:700 .85rem var(--body);
  color:var(--night);background:var(--gold);border-radius:3px;box-shadow:none}
.small{font-size:.86rem;color:var(--mist-soft)}
.dl{display:inline-block;margin:.8rem 0 .2rem;padding:.55rem 1rem;border-radius:3px;text-decoration:none;font-weight:700;
  color:var(--night);background:var(--gold);box-shadow:0 0 0 1px var(--gold-hi) inset}
.dl:hover{background:var(--gold-hi)}
code{font-size:.92em;color:#f0e6cc;background:rgba(255,255,255,.06);padding:.05rem .3rem;border-radius:3px}
details{margin-top:2rem;border-top:1px solid rgba(169,189,178,.2);padding-top:1rem}
summary{cursor:pointer;color:var(--gold-hi);font-weight:500}
pre{overflow-x:auto;padding:.8rem 1rem;background:rgba(0,0,0,.3);border-radius:3px;border:1px solid rgba(217,178,94,.2)}
pre code{background:none;padding:0}
.back{margin-top:2rem}
.foot{text-align:center;font-size:.82rem;color:var(--mist-soft);padding:0 1rem 2.5rem}

@media (max-width:820px){
  .gate{grid-template-columns:minmax(0,1fr);gap:3.5rem}
  .charter{padding:1.8rem 1.25rem 1.5rem}
}
@media (max-width:440px){ .pair{grid-template-columns:1fr} }
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .status.live .flame{animation:none}
}