:root {
  --bg: #0b0a08;
  --bg-2: #13110d;
  --bg-rgb: 11, 10, 8;
  --ink: #f2eadb;
  --muted: #b5aa92;
  --dim: #857b62;
  --gold: #c4a265;
  --gold-hi: #f0dcad;
  --gold-lo: #9a783d;
  --gold-rgb: 196, 162, 101;
  --line: rgba(196, 162, 101, .2);
  --line-hi: rgba(196, 162, 101, .48);
  --glass: rgba(22, 20, 16, .62);
  --glass-hi: rgba(30, 27, 21, .84);
  --on-gold: #16120a;
  --shadow: rgba(0, 0, 0, .5);
  --display: 'Cormorant Garamond', Cormorant, Garamond, Georgia, 'Times New Roman', serif;
  --body: 'Outfit', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.6 var(--body); }
body.is-playing { overflow: hidden; overscroll-behavior: none; }
[hidden] { display: none !important; }
a { color: var(--gold); }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }


.bar { position: absolute; top: 0; left: 0; right: 0; z-index: 5; padding-top: env(safe-area-inset-top, 0px); transition: opacity .35s ease; }
.bar-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 1240px; margin: 0 auto; padding-block: 18px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.brand { display: inline-block; white-space: nowrap; color: var(--ink); text-decoration: none; font: 700 1.15rem/1 var(--body); letter-spacing: .3px; }
.brand b { font-weight: 700; color: var(--gold); }
.brand small { margin-left: 10px; font-size: .78rem; font-weight: 500; color: var(--muted); letter-spacing: .4px; }
.cnav { display: flex; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 999px; background: var(--glass); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.cnav a { display: flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; color: var(--muted); font-size: .85rem; font-weight: 500; text-decoration: none; white-space: nowrap; }
.cnav a b { font: 600 1.05rem/1 var(--display); color: var(--gold); }
.cnav a:hover { color: var(--ink); }
.cnav a[aria-current="page"] { background: var(--gold); color: var(--on-gold); }
.cnav a[aria-current="page"] b { color: var(--on-gold); }
body.is-playing .bar { opacity: 0; pointer-events: none; }


.hero { position: relative; min-height: min(90vh, 860px); overflow: hidden; background: var(--bg); isolation: isolate; }
.hero:fullscreen { min-height: 100vh; }
.scene { position: absolute; inset: 0; width: 100%; height: 100%; display: block; outline: none; touch-action: pan-y; -webkit-tap-highlight-color: transparent; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; transition: opacity .6s ease;
  background: linear-gradient(90deg, rgba(var(--bg-rgb), .86) 0%, rgba(var(--bg-rgb), .6) 30%, rgba(var(--bg-rgb), 0) 56%); }
.hero[data-mode="play"]::after, .hero[data-mode="over"]::after { opacity: 0; }

.hero-copy { position: relative; z-index: 2; max-width: 1240px; margin: 0 auto; display: grid; gap: 18px; justify-items: start; pointer-events: none;
  padding-block: clamp(110px, 17vh, 160px) 48px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px));
  transition: opacity .45s ease, visibility 0s; }
.hero-copy > * { max-width: 520px; margin: 0; transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1); }
.hero-copy > :nth-child(2) { transition-delay: .12s; }
.hero-copy > :nth-child(3) { transition-delay: .24s; }
.hero-copy > :nth-child(4) { transition-delay: .36s; }
.hero-copy a, .hero-copy button { pointer-events: auto; }
.hero.is-intro .hero-copy > * { opacity: 0; transform: translateY(14px); }
.hero[data-mode="play"] .hero-copy, .hero[data-mode="over"] .hero-copy { opacity: 0; visibility: hidden; transition: opacity .35s ease, visibility 0s linear .35s; }

.badge { display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px; border: 1px solid var(--line-hi); border-radius: 999px; background: var(--glass); color: var(--gold-hi); font-size: .76rem; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase; }
.title { font: 600 clamp(2.3rem, 4.6vw, 3.9rem)/1.02 var(--display); letter-spacing: -.4px; color: var(--ink); text-wrap: balance; }
.title em { font-style: italic; font-weight: 500; color: var(--gold); }
.lead { max-width: 46ch; color: var(--muted); font-size: clamp(1rem, 1.35vw, 1.1rem); line-height: 1.65; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 46px; padding: 0 22px; border-radius: 999px; border: 1px solid transparent; font: 600 .95rem/1 var(--body); text-decoration: none; cursor: pointer; transition: transform .2s, box-shadow .2s, border-color .2s, background-color .2s; }
.btn-gold { background: linear-gradient(135deg, var(--gold-hi), var(--gold) 55%, var(--gold-lo)); color: var(--on-gold); box-shadow: 0 6px 24px rgba(var(--gold-rgb), .25); }
.btn-gold:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(var(--gold-rgb), .38); }
.btn-ghost { background: var(--glass); border-color: var(--line-hi); color: var(--ink); }
.btn-ghost:hover { border-color: var(--gold); }
.play-ico { width: 0; height: 0; border-left: 10px solid currentColor; border-top: 6px solid transparent; border-bottom: 6px solid transparent; }


.hud { position: absolute; z-index: 3; top: 0; left: 0; right: 0; display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; pointer-events: none;
  padding-top: calc(14px + env(safe-area-inset-top, 0px)); padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.hud-score { display: grid; gap: 4px; min-width: 0; padding: 10px 16px 9px; border: 1px solid var(--line); border-radius: 14px; background: var(--glass); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.hud-score strong { font: 600 2.1rem/1 var(--display); font-variant-numeric: lining-nums tabular-nums; color: var(--gold-hi); }
.hud-score span { font-size: .78rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.hud-tools { display: flex; gap: 8px; pointer-events: auto; }
.icon-btn { width: 42px; height: 42px; display: grid; place-items: center; padding: 0; border-radius: 12px; border: 1px solid var(--line); background: var(--glass); color: var(--ink); cursor: pointer; }
.icon-btn:hover { border-color: var(--line-hi); }
.icon-btn svg { width: 18px; height: 18px; }

.panel { position: absolute; z-index: 4; inset: 0; display: grid; place-items: center; padding: 16px; background: rgba(var(--bg-rgb), .42); }
.panel-in { width: min(380px, 100%); display: grid; gap: 14px; justify-items: center; text-align: center; padding: 28px 24px; border: 1px solid var(--line-hi); border-radius: 20px; background: var(--glass-hi); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: 0 24px 60px var(--shadow); }
.panel h2 { margin: 0; font: 600 2rem/1.1 var(--display); color: var(--ink); }
.panel p { margin: 0; color: var(--muted); }
.panel .big { font: 600 3.4rem/1 var(--display); font-variant-numeric: lining-nums tabular-nums; color: var(--gold-hi); }
.panel .row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.panel strong { color: var(--ink); font-variant-numeric: tabular-nums; }
.new-best { display: inline-block; margin-left: 6px; padding: 2px 10px; border-radius: 999px; background: var(--gold); color: var(--on-gold); font-size: .72rem; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; }
.tiny { font-size: .8rem; color: var(--dim) !important; }

.hint { position: absolute; z-index: 3; left: 50%; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); width: max-content; max-width: calc(100% - 32px); margin: 0; padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px; background: var(--glass); color: var(--ink); font-size: .85rem; text-align: center; pointer-events: none; transition: opacity .6s ease; }
.hint.is-gone { opacity: 0; }
.hint .t { display: none; }
@media (pointer: coarse) { .hint .k, .k-only { display: none !important; } .hint .t { display: inline; } }


.notes { padding-block: 64px 80px; border-top: 1px solid var(--line); background: var(--bg-2); }
.notes-in { max-width: 1120px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 56px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.notes-lede { display: grid; gap: 14px; align-content: start; justify-items: start; }
.notes-lede > * { margin: 0; }
.notes-body { display: grid; gap: 30px; min-width: 0; }
.eyebrow { color: var(--gold); font-size: .78rem; font-weight: 600; letter-spacing: 1.4px; text-transform: uppercase; }
.notes h2 { font: 600 clamp(2rem, 3.4vw, 2.7rem)/1.08 var(--display); color: var(--ink); text-wrap: balance; }
.notes h3 { margin: 0 0 10px; color: var(--gold); font-size: .78rem; font-weight: 600; letter-spacing: 1.4px; text-transform: uppercase; }
.notes p { margin: 0 0 12px; max-width: 62ch; color: var(--muted); }
.notes-lede p { color: var(--ink); font-size: 1.05rem; }
.keys { margin: 0; display: grid; border-top: 1px solid var(--line); }
.keys > div { display: grid; grid-template-columns: 10rem minmax(0, 1fr); gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.keys dt { color: var(--ink); font-weight: 500; }
.keys dd { margin: 0; color: var(--muted); }
kbd { display: inline-block; min-width: 1.7em; padding: 1px 6px; border: 1px solid var(--line-hi); border-bottom-width: 2px; border-radius: 6px; background: var(--bg); color: var(--ink); font: 500 .8rem/1.4 var(--body); text-align: center; }

@media (max-width: 860px) {
  .notes-in { grid-template-columns: minmax(0, 1fr); gap: 34px; }
}
@media (max-width: 719px) {
  .hero { min-height: max(680px, 88vh); }
  .hero::after { background: linear-gradient(180deg, rgba(var(--bg-rgb), .9) 0%, rgba(var(--bg-rgb), .72) 42%, rgba(var(--bg-rgb), 0) 66%); }
  .hero-copy { padding-top: 96px; gap: 14px; }
  .brand small { display: none; }
  .cnav a { padding: 6px 12px; }
  .cnav a span { display: none; }
  .keys > div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-copy > *, .btn, .bar, .hint, .hero::after { transition: none; }
  .btn-gold:hover { transform: none; }
}


@keyframes xat-copy-fallback { to { opacity: 1; transform: none; } }
.hero.is-intro .hero-copy > * { animation: xat-copy-fallback 0s linear 4.5s forwards; }


.hero.hero-short { min-height: clamp(480px, 62vh, 580px); }
.concepts { padding-block: 12px 72px; }
.concepts-in, .foot-in { max-width: 1180px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.concepts-in { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); gap: 18px; }
.concept { display: grid; grid-template-rows: auto auto 1fr auto auto; gap: 12px; min-width: 0; padding: 26px 24px 22px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(180deg, var(--glass-hi), var(--glass)); color: var(--ink); text-decoration: none; transition: border-color .25s, transform .25s, box-shadow .25s; }
.concept:hover, .concept:focus-visible { border-color: var(--line-hi); transform: translateY(-3px); box-shadow: 0 18px 40px var(--shadow); }
.concept-letter { font: 600 3.4rem/.9 var(--display); color: var(--gold); }
.concept h2 { margin: 0; font: 600 2rem/1.05 var(--display); color: var(--ink); }
.concept > p { margin: 0; color: var(--muted); }
.concept dl { margin: 4px 0 0; display: grid; border-top: 1px solid var(--line); }
.concept dl > div { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: .88rem; }
.concept dt { color: var(--dim); font-weight: 600; }
.concept dd { margin: 0; color: var(--ink); }
.concept-go { color: var(--gold-hi); font-weight: 600; }
.concept-go::after { content: " →"; }
.play-note { margin: 22px 0 0; max-width: 70ch; color: var(--muted); font-size: .92rem; }


.foot { padding-block: 28px calc(28px + env(safe-area-inset-bottom, 0px)); border-top: 1px solid var(--line); color: var(--dim); font-size: .85rem; }
.foot-in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; }
.foot-in p { margin: 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.foot-links a { color: var(--gold); text-decoration: none; }
.foot-links a:hover { text-decoration: underline; }

@media (max-width: 960px) { .concepts-in { grid-template-columns: minmax(0, 1fr); } }


.panel-in { max-height: calc(100% - 8px); overflow-y: auto; }
.arena-form { width: 100%; display: grid; gap: 6px; text-align: left; padding-top: 12px; border-top: 1px solid var(--line); }
.arena-form label { color: var(--muted); font-size: .8rem; font-weight: 500; }
.arena-form input[type="email"], .arena-form input[type="text"] { width: 100%; min-height: 42px; padding: 8px 12px; border: 1px solid var(--line-hi); border-radius: 10px; background: var(--bg); color: var(--ink); font: 400 .95rem/1.3 var(--body); }
.arena-form input:focus-visible { outline: 2px solid var(--gold); outline-offset: 1px; }
.arena-form .arena-check { display: flex; align-items: flex-start; gap: 8px; margin: 4px 0 6px; color: var(--muted); font-size: .82rem; font-weight: 400; }
.arena-form .arena-check input { margin-top: 3px; accent-color: var(--gold); }
.arena-form .btn { justify-self: start; }
.arena-lead { margin: 0 0 4px !important; color: var(--ink) !important; font-size: .9rem; }
.arena-lead a, .arena-form .tiny a { color: var(--gold); }
.arena-msg { min-height: 1.3em; margin: 2px 0 0 !important; font-size: .85rem; color: var(--muted) !important; }
.arena-msg.is-good { color: var(--gold-hi) !important; }


.arena-page .arena-bar { position: relative; }
.arena-main { max-width: 1080px; margin: 0 auto; padding-block: 16px 64px; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); display: grid; gap: 40px; }
.arena-head { display: grid; gap: 16px; justify-items: start; }
.arena-head > * { margin: 0; }
.arena-facts { margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 10px 24px; width: 100%; border-top: 1px solid var(--line); padding-top: 14px; }
.arena-facts dt { color: var(--dim); font-size: .75rem; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase; }
.arena-facts dd { margin: 2px 0 0; color: var(--ink); }
.arena-facts a { color: var(--gold); }
.arena-board h2 { margin: 0 0 12px; font: 600 clamp(1.7rem, 3vw, 2.2rem)/1.1 var(--display); }
.arena-status { margin: 0 0 12px; color: var(--muted); }
.arena-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--glass); }
.arena-table { width: 100%; min-width: 560px; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.arena-table th, .arena-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line); }
.arena-table th { color: var(--dim); font-size: .75rem; font-weight: 600; letter-spacing: .8px; text-transform: uppercase; }
.arena-table td.num, .arena-table th.num { text-align: right; }
.arena-table td.rank { color: var(--gold); font: 600 1.1rem/1 var(--display); width: 3.5rem; }
.arena-table td.pts { color: var(--gold-hi); font-weight: 600; }
.arena-table tr:last-child td { border-bottom: 0; }
.arena-table tr.is-winning td:first-child { box-shadow: inset 3px 0 0 var(--gold); }
.arena-how { margin: 14px 0 18px; max-width: 75ch; color: var(--muted); font-size: .88rem; }
@media (prefers-reduced-motion: reduce) {
  .concept { transition: none; }
  .concept:hover, .concept:focus-visible { transform: none; }
  .hero.is-intro .hero-copy > * { animation: none; opacity: 1; transform: none; }
}