:root{
  --bg:#000; --ink:#f5f5f7; --muted:#86868b; --line:rgba(255,255,255,.1);
  --purple:#9945FF; --cyan:#00C2FF; --green:#14F195;
  --grad:linear-gradient(90deg,#9945FF,#00C2FF 55%,#14F195);
  --display:"Inter Tight","Inter",-apple-system,BlinkMacSystemFont,"SF Pro Display",system-ui,sans-serif;
  --body:"Inter",-apple-system,BlinkMacSystemFont,"SF Pro Text",system-ui,sans-serif;
  --pad:clamp(1.25rem,5vw,4rem); --max:1280px;
  --ease:cubic-bezier(.2,.7,.1,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#000;color:var(--ink);font:400 17px/1.5 var(--body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
h1,h2,p{margin:0}
h1,h2{font-family:var(--display);font-weight:700;letter-spacing:-.045em}

.btn{position:relative;overflow:hidden;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;color:#000;font-weight:600;font-size:1.02rem;padding:.9rem 1.7rem;border-radius:980px;background:linear-gradient(110deg,#9945FF 0%,#00C2FF 50%,#14F195 100%);background-size:200% 100%;background-position:0% 50%;box-shadow:0 0 0 1px rgba(255,255,255,.12) inset,0 8px 24px -10px rgba(153,69,255,.6);transition:transform .35s var(--ease),background-position .6s var(--ease),box-shadow .35s var(--ease)}
.btn::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,transparent 35%,rgba(255,255,255,.55) 50%,transparent 65%);transform:translateX(-120%);animation:sheen 4.5s var(--ease) infinite}
.btn:hover{transform:translateY(-2px) scale(1.03);background-position:100% 50%;box-shadow:0 0 0 1px rgba(255,255,255,.25) inset,0 14px 34px -10px rgba(153,69,255,.75),0 0 38px -6px rgba(20,241,149,.45)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--green);outline-offset:3px}
.btn-sm{font-size:.85rem;padding:.5rem 1.05rem}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px rgba(245,245,247,.35)}
.btn-ghost::after,.btn-ghost-dark::after{display:none}
.btn-ghost:hover{background:rgba(255,255,255,.07);box-shadow:inset 0 0 0 1.5px var(--green),0 0 30px -10px rgba(20,241,149,.6)}
.btn-dark{background:#000;color:#fff;box-shadow:0 12px 30px -12px rgba(0,0,0,.6)}
.btn-dark::after{background:linear-gradient(105deg,transparent 35%,rgba(255,255,255,.18) 50%,transparent 65%)}
.btn-dark:hover{background:#000;box-shadow:0 18px 40px -12px rgba(0,0,0,.7)}
.btn-ghost-dark{background:transparent;color:#000;box-shadow:inset 0 0 0 1.5px rgba(0,0,0,.7)}
.btn-ghost-dark:hover{background:rgba(0,0,0,.08);box-shadow:inset 0 0 0 1.5px #000}
@keyframes sheen{0%,55%{transform:translateX(-120%)}85%,100%{transform:translateX(120%)}}
@keyframes shift{to{background-position:200% 50%}}
.text-link{color:var(--ink);font-weight:500;font-size:1.02rem;position:relative}
.text-link::after{content:" ›";color:var(--green)}
.text-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--green)}

/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:background .4s,backdrop-filter .4s}
.nav.solid{background:rgba(0,0,0,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);box-shadow:0 1px 0 var(--line)}
.nav-in{max-width:var(--max);margin:0 auto;height:56px;padding:0 var(--pad);display:flex;align-items:center;gap:2.5rem}
.logo img{height:24px;width:auto;display:block}
.nav-links{display:flex;gap:2rem;margin-right:auto;font-size:.85rem;color:#c7c7cc}
.nav-links a:hover{color:#fff}

/* hero */
.hero{position:relative;height:100vh;height:100svh;min-height:640px;overflow:hidden}
#particles{position:absolute;inset:0;width:100%;height:100%;touch-action:pan-y}
.hero-copy{position:absolute;inset:56px 0 0;max-width:var(--max);margin:0 auto;padding:0 var(--pad);display:flex;flex-direction:column;justify-content:center;align-items:flex-start;pointer-events:none}
.hero-copy>*{pointer-events:auto}
.hero h1{font-size:clamp(48px,3.75vw,72px);line-height:1.04;letter-spacing:-.04em;font-weight:600}
.hero h1 span{display:block;white-space:nowrap}
.hero h1 span+span{color:#86868b}
.hero-copy p{margin-top:1.6rem;max-width:30rem;font-size:clamp(1.05rem,1.4vw,1.3rem);color:#a1a1a6;line-height:1.45}
.hero-cta{display:flex;align-items:center;gap:2rem;margin-top:2.2rem;flex-wrap:wrap}
.hero-cta.center{justify-content:center}

/* statement: words light up as you scroll */
.statement{position:relative;height:220vh}
.statement-pin{position:sticky;top:0;height:100vh;display:flex;align-items:center;max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.words{font-family:var(--display);font-weight:600;font-size:clamp(2rem,4.6vw,4.4rem);line-height:1.08;letter-spacing:-.035em;max-width:20ch}
.words span{color:#2c2c2e;transition:color .25s}
.words span.on{color:var(--ink)}
.words span.hl.on{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* arena */
.arena{border-top:1px solid var(--line);padding:9rem 0 7rem}
.arena-head{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.arena h2,.modes h2,.how h2,.faq h2{font-size:clamp(2.8rem,6.4vw,6rem);line-height:.95}
.lead{margin-top:1.2rem;font-family:var(--display);font-weight:600;font-size:clamp(1.4rem,2.4vw,2.2rem);letter-spacing:-.025em;line-height:1.15;color:#a1a1a6;max-width:24ch}
.arena-stage{position:relative;margin:4rem auto 0;width:min(100% - 2*var(--pad), 1440px);aspect-ratio:16/8.2;border-radius:32px;overflow:hidden;background:#06060a;transform:scale(calc(.9 + var(--p,0) * .1));transform-origin:center top;will-change:transform}
#arena-canvas{position:absolute;inset:0;width:100%;height:100%}
.arena-notes{max-width:var(--max);margin:3.5rem auto 0;padding:0 var(--pad);display:grid;grid-template-columns:repeat(3,1fr);gap:2.5rem}
.arena-notes p{color:#a1a1a6;font-size:1.08rem;line-height:1.5}
.arena-notes b{color:var(--ink);font-weight:600}

/* modes */
.modes{max-width:var(--max);margin:0 auto;padding:9rem var(--pad);border-top:1px solid var(--line)}
.mode-list{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);margin-top:4rem;border-radius:24px;overflow:hidden}
.mode{background:#050508;padding:2.4rem 1.8rem 2.6rem;min-height:16rem;display:flex;flex-direction:column;justify-content:space-between}
.mode h3{margin:0;font-family:var(--display);font-weight:600;font-size:clamp(1.5rem,2.2vw,2rem);letter-spacing:-.03em}
.mode p{color:#a1a1a6;margin-top:2rem}
.mode:hover h3{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.frames{display:flex;flex-wrap:wrap;gap:clamp(1.2rem,4vw,4rem);margin-top:5rem;font-family:var(--display);font-weight:700;font-size:clamp(2.6rem,7vw,6.5rem);letter-spacing:-.05em;line-height:1}
.frames span{color:#2c2c2e;transition:color .6s var(--ease)}
.frames.in span{color:var(--ink)}
.frames.in span:nth-child(2){transition-delay:.1s}.frames.in span:nth-child(3){transition-delay:.2s}.frames.in span:nth-child(4){transition-delay:.3s}
.frames.in span:nth-child(5){transition-delay:.4s;color:var(--green)}
.frames-note{margin-top:1.4rem;color:#a1a1a6;font-size:1.08rem}


/* long / short */
.trade{border-top:1px solid var(--line)}
.trade-in{max-width:var(--max);margin:0 auto;padding:9rem var(--pad)}
.trade h2{font-size:clamp(2.8rem,6.4vw,6rem);line-height:.95}
.sides{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;margin-top:4rem}
.side-card{border-radius:28px;padding:clamp(2rem,4vw,3.4rem);min-height:20rem;display:flex;flex-direction:column;justify-content:space-between}
.side-card h3{margin:0;font-family:var(--display);font-weight:700;font-size:clamp(3rem,7vw,6.5rem);letter-spacing:-.05em;line-height:.9}
.side-card p{max-width:24rem;font-family:var(--display);font-weight:600;font-size:clamp(1.2rem,1.8vw,1.6rem);letter-spacing:-.02em;line-height:1.2}
.side-card.long{background:var(--green);color:#000}
.side-card.short{background:var(--purple);color:#fff}
.trade-note{margin-top:2rem;color:#a1a1a6;font-size:1.08rem;max-width:40rem}
.arena-notes.two{grid-template-columns:1fr 1fr}
.modes .lead{margin-top:1.2rem}
.mode-list.three{grid-template-columns:repeat(3,1fr)}
.mode-list.three .mode{min-height:13rem}

/* how */
.how{max-width:var(--max);margin:0 auto;padding:9rem var(--pad);border-top:1px solid var(--line)}
.steps{list-style:none;margin:4.5rem 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(2rem,4vw,4rem)}
.steps .n{display:block;font-family:var(--display);font-weight:700;font-size:clamp(5rem,10vw,9rem);line-height:.8;letter-spacing:-.06em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;background-size:300% 100%}
.steps li:nth-child(1) .n{background-position:0 0}.steps li:nth-child(2) .n{background-position:50% 0}.steps li:nth-child(3) .n{background-position:100% 0}
.steps h3{margin:2rem 0 .8rem;font-family:var(--display);font-weight:600;font-size:clamp(1.5rem,2.2vw,2rem);letter-spacing:-.03em}
.steps p{color:#a1a1a6;font-size:1.08rem}

/* faq */
.faq{max-width:960px;margin:0 auto;padding:9rem var(--pad);border-top:1px solid var(--line)}
.faq-list{margin-top:3.5rem;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.6rem 0;font-family:var(--display);font-weight:600;font-size:clamp(1.15rem,1.8vw,1.5rem);letter-spacing:-.02em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;font-size:1.6em;line-height:1;color:var(--muted);transition:transform .3s var(--ease)}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--green)}
.faq details p{padding:0 0 1.8rem;color:#a1a1a6;font-size:1.08rem;max-width:44rem}

/* finale */
.finale{position:relative;overflow:hidden;isolation:isolate;min-height:92vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:9rem var(--pad);color:#000;background:#9945FF}
.mesh{position:absolute;inset:-20%;z-index:-1;background:
  radial-gradient(40% 50% at 20% 30%,#9945FF 0%,transparent 70%),
  radial-gradient(45% 55% at 80% 25%,#00C2FF 0%,transparent 70%),
  radial-gradient(50% 60% at 65% 85%,#14F195 0%,transparent 70%),
  radial-gradient(40% 50% at 15% 85%,#00C2FF 0%,transparent 70%),
  linear-gradient(120deg,#9945FF,#14F195);
  filter:saturate(1.1);animation:mesh 18s ease-in-out infinite alternate}
.mesh::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1.5px);background-size:28px 28px;opacity:.18;animation:drift 30s linear infinite;mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent)}
@keyframes mesh{0%{transform:translate3d(0,0,0) rotate(0deg) scale(1)}50%{transform:translate3d(4%,-3%,0) rotate(8deg) scale(1.08)}100%{transform:translate3d(-4%,3%,0) rotate(-6deg) scale(1.04)}}
@keyframes drift{to{background-position:280px -280px}}
.finale-mark{width:clamp(72px,9vw,112px);height:auto;filter:brightness(0)}
.finale h2{margin-top:2rem;font-size:clamp(3.4rem,10vw,9.5rem);line-height:.9;letter-spacing:-.055em}
.finale-sub{margin-top:1.4rem;font-size:clamp(1.1rem,1.6vw,1.4rem);font-weight:500;max-width:28rem}
.finale .hero-cta{margin-top:2.6rem}

/* section backdrop tint + ambient particles */
@property --tc{syntax:"<color>";inherits:false;initial-value:#000}
.tint{position:fixed;inset:0;z-index:-2;--tc:#000;background:radial-gradient(90% 70% at 50% 0%,var(--tc),#000 75%);transition:--tc 1.2s var(--ease)}
#ambient{position:fixed;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none;opacity:0;transition:opacity .8s}
#ambient.on{opacity:1}

/* animated accent bar above section titles */
.trade h2::before,.arena h2::before,.modes h2::before,.how h2::before,.faq h2::before{content:"";display:block;width:56px;height:4px;border-radius:4px;margin-bottom:1.8rem;background:linear-gradient(90deg,#9945FF,#00C2FF,#14F195,#9945FF);background-size:200% 100%;animation:shift 5s linear infinite}

/* card micro-interactions */
.side-card{position:relative;overflow:hidden;transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .5s var(--ease),box-shadow .5s var(--ease);will-change:transform}
.side-card::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.28),transparent 45%);opacity:0;transition:opacity .4s}
.side-card:hover{box-shadow:0 30px 60px -30px rgba(0,0,0,.8)}
.side-card:hover::after{opacity:1}
.side-card.long h3,.side-card.short h3{transition:transform .5s var(--ease)}
.side-card.long:hover h3{transform:translateY(-6px)}
.side-card.short:hover h3{transform:translateY(6px)}
.mode{position:relative;transition:background .4s var(--ease),transform .4s var(--ease)}
.mode::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .6s var(--ease)}
.mode:hover{background:#0a0a10}
.mode:hover::before{transform:scaleX(1)}
.steps li{transition:transform .5s var(--ease)}
.steps li:hover{transform:translateY(-6px)}
.steps li:hover .n{animation:shift 2.4s linear infinite;background-image:linear-gradient(90deg,#9945FF,#00C2FF,#14F195,#9945FF);background-size:200% 100%}
.faq summary{transition:color .3s}
.faq summary:hover{color:#fff}
.faq details[open] summary{color:var(--green)}
.arena-stage{box-shadow:0 0 0 1px rgba(255,255,255,.06),0 40px 120px -40px rgba(0,194,255,.25)}

/* footer */
.foot{border-top:1px solid var(--line);color:var(--muted);font-size:.8rem}
.foot-in{max-width:var(--max);margin:0 auto;padding:2rem var(--pad);display:flex;align-items:center;gap:2rem;flex-wrap:wrap}
.foot img{height:20px;width:auto;opacity:.9}
.foot nav{display:flex;gap:1.5rem}
.foot nav a:hover{color:var(--ink)}
.foot p{margin:0}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.12s}.d2{transition-delay:.24s}

/* 404 */
.miss{min-height:100vh;display:flex;flex-direction:column;justify-content:center;max-width:var(--max);margin:0 auto;padding:6rem var(--pad)}
.miss h1{font-size:clamp(3rem,9vw,8rem);line-height:.92;max-width:10ch}
.miss h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.miss p{margin-top:1.6rem;color:#a1a1a6;font-size:1.15rem;max-width:30rem}

@media (max-width:860px){
  .nav-links{display:none}
  .nav-in{justify-content:space-between}
  .hero{min-height:620px}
  .hero-copy{justify-content:flex-end;padding-bottom:clamp(2.5rem,7vh,4rem)}
  .arena{padding:6rem 0 5rem}
  .arena-stage{aspect-ratio:4/5;border-radius:22px;margin-top:2.5rem}
  .arena-notes,.steps{grid-template-columns:1fr;gap:1.6rem}
  .mode-list,.mode-list.three{grid-template-columns:1fr}
  .sides,.arena-notes.two{grid-template-columns:1fr}
  .side-card{min-height:15rem}
  .trade-in{padding:6rem var(--pad)}
  .hero h1{font-size:clamp(34px,9.2vw,44px)}
  .hero h1 span{display:inline;white-space:normal}
  .mode{min-height:12rem;padding:1.6rem 1.3rem}
  .modes,.how,.faq{padding:6rem var(--pad)}
  .statement{height:180vh}
}
@media (prefers-reduced-motion:reduce){
  .btn::after,.mesh,.mesh::after,.trade h2::before,.arena h2::before,.modes h2::before,.how h2::before,.faq h2::before{animation:none}
  .side-card{transform:none}
  #ambient{display:none}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .arena-stage{--p:1!important}
  .frames span{color:var(--ink)}
  .words span{color:var(--ink)}
}