:root{
  --ink:#232320;          /* near-black text */
  --ink-soft:#787774;     /* muted gray */
  --bg:#ffffff;
  --paper:#ffffff;
  --line:#e9e9e7;         /* hairline */
  --line-2:#dcdcda;
  --dark:#1a1a18;         /* the single black accent */
  --hover:#f6f6f4;
  --sans:system-ui,"PingFang TC","Microsoft JhengHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:auto}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;line-height:1.65;overflow-x:hidden}
section{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft)}
.eyebrow .dot{flex:none;width:24px;height:1px;background:var(--ink-soft);border-radius:0}
h1,h2,h3{font-weight:500;letter-spacing:-.015em}

/* ---------------- nav ---------------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;border-bottom:1px solid transparent}
.nav-in{display:flex;align-items:center;justify-content:space-between;padding:14px clamp(18px,5vw,40px);background:rgba(255,255,255,.78);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand-mark{width:28px;height:28px;border-radius:6px;background:var(--dark);color:#fff;display:grid;place-items:center;font-size:14px}
.brand-txt{font-size:13px;letter-spacing:.04em;font-weight:500}
.brand-txt i{font-style:normal;color:var(--ink-soft);margin:0 4px}
.nav-pill{text-decoration:none;color:var(--ink);font-size:12.5px;border:1px solid var(--line-2);border-radius:7px;padding:7px 14px;background:#fff;transition:.18s}
.nav-pill:hover{background:var(--hover)}

/* ---------------- hero (sticky) ---------------- */
.stage{height:100dvh}
.hero .pin{position:sticky;top:0;height:100dvh;display:grid;place-items:center;overflow:hidden}
.hero-bg{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:clamp(120px,34vw,460px);font-weight:600;color:#f4f4f2;letter-spacing:-.04em;white-space:nowrap;pointer-events:none}
.hero-copy{position:relative;text-align:center;padding:0 24px;max-width:720px}
.hero-copy h1{font-size:clamp(54px,14vw,140px);line-height:.94;margin:20px 0 22px;letter-spacing:-.035em}
.hero-copy h1 .thin{font-weight:300;color:var(--ink-soft)}
.lead{font-size:clamp(15px,2.3vw,19px);color:var(--ink-soft);margin-bottom:26px}
.dates{font-size:12.5px;letter-spacing:.04em;color:var(--ink-soft);border-top:1px solid var(--line);display:inline-block;padding-top:14px}
.scroll-cue{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11px;letter-spacing:.28em;color:var(--ink-soft);opacity:0}
.scroll-cue i{width:1px;height:36px;background:linear-gradient(var(--ink-soft),transparent)}

/* ---------------- coverflow (sticky scrub) ---------------- */
.cards{height:560vh;background:#fff}
.cards-pin{position:sticky;top:0;height:100dvh;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fbfbfa;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cards-head{position:absolute;top:80px;left:0;right:0;text-align:center}
.coverflow{position:relative;width:100%;height:62vh;max-height:560px}
.cf-card{position:absolute;top:50%;left:50%;width:min(48vw,232px);aspect-ratio:2/3;border-radius:16px;overflow:hidden;will-change:transform,filter,opacity;box-shadow:0 22px 48px -28px rgba(20,20,20,.4);border:1px solid rgba(0,0,0,.06)}
.cf-card .frame{position:absolute;inset:7px;border:1px solid rgba(255,255,255,.5);border-radius:10px;pointer-events:none}
.cf-card .sil{position:absolute;inset:0 0 16% 0;display:grid;place-items:center}
.cf-card .plate{position:absolute;left:9px;right:9px;bottom:9px;background:rgba(255,255,255,.93);border-radius:8px;padding:7px 10px}
.cf-card .plate .pk{font-size:8.5px;letter-spacing:.12em;opacity:.7;margin-bottom:1px}
.cf-card .plate .pn{font-size:14px;font-weight:500;line-height:1.15}
.cf-card .plate .pt{font-size:9.5px;opacity:.75;margin-top:1px}
.cf-card .no{position:absolute;top:11px;left:12px;font-size:11px;font-weight:500;letter-spacing:.06em}
.cf-card .star{position:absolute;top:10px;right:12px;font-size:13px}
.cards-label{position:absolute;left:0;right:0;bottom:118px;text-align:center;pointer-events:none}
.cf-index{font-size:12px;letter-spacing:.2em;color:var(--ink-soft)}
.cf-name{font-size:clamp(28px,6vw,46px);margin:6px 0 2px;color:var(--ink)}
.cf-flavor{font-size:13px;letter-spacing:.04em;color:var(--ink-soft)}
.cards-foot{position:absolute;bottom:46px;left:0;right:0;text-align:center;font-size:12px;color:var(--ink-soft)}
.cards-foot .bar{width:min(60vw,240px);height:2px;background:var(--line);border-radius:2px;margin:0 auto 12px;overflow:hidden}
.cards-foot .bar i{display:block;height:100%;width:0;background:var(--ink)}

/* ---------------- flow blocks ---------------- */
.block{padding:clamp(84px,13vw,150px) clamp(20px,5vw,40px);border-top:1px solid var(--line)}
.block-in{max-width:900px;margin:0 auto}
.block h2{font-size:clamp(30px,6vw,56px);line-height:1.06;letter-spacing:-.025em}
.block--mech{background:#fff}
.mech-lead h2{margin:14px 0 18px}
.mech-lead .hl{background:linear-gradient(transparent 62%, #ececea 0)}
.mech-lead p{font-size:clamp(15px,2.2vw,18px);color:var(--ink-soft);max-width:620px}
.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:52px}
.step{border:1px solid var(--line);border-radius:10px;padding:24px 22px 28px;background:#fff}
.step--accent{background:var(--dark);color:#fff;border-color:var(--dark)}
.step-no{font-size:12px;letter-spacing:.2em;color:var(--ink-soft)}
.step--accent .step-no{color:rgba(255,255,255,.55)}
.step h3{font-size:18px;margin:14px 0 8px}
.step p{font-size:13.5px;color:var(--ink-soft)}
.step--accent p{color:rgba(255,255,255,.7)}

.block--odds{background:#fff}
.block--odds h2{margin:14px 0 34px}
.odds-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.odds-card{border:1px solid var(--line);border-radius:12px;padding:30px 26px;background:#fff;display:flex;flex-direction:column;gap:6px}
.odds-card--rare{background:var(--dark);color:#fff;border-color:var(--dark)}
.odds-k{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}
.odds-card--rare .odds-k{color:rgba(255,255,255,.6)}
.odds-v{font-size:clamp(38px,7.5vw,64px);font-weight:500;line-height:1;letter-spacing:-.025em}
.odds-d{font-size:13px;color:var(--ink-soft)}
.odds-card--rare .odds-d{color:rgba(255,255,255,.72)}
.link-pill{margin-top:32px;font:inherit;font-size:13px;cursor:pointer;color:var(--ink);background:#fff;border:1px solid var(--line-2);border-radius:7px;padding:10px 18px;transition:.18s}
.link-pill:hover{background:var(--hover)}

.block--cta{background:var(--dark);color:#fff;text-align:center;border-top:none}
.block--cta .eyebrow{color:rgba(255,255,255,.6)}
.block--cta .eyebrow .dot{background:rgba(255,255,255,.45)}
.cta-in{max-width:660px}
.block--cta h2{margin:16px 0 18px}
.block--cta p{color:rgba(255,255,255,.7);font-size:clamp(15px,2.2vw,18px)}
.cta-btn{margin-top:30px;font:inherit;font-size:15px;cursor:pointer;color:var(--dark);background:#fff;border:none;border-radius:8px;padding:14px 32px;transition:.18s}
.cta-btn:hover{transform:translateY(-1px);background:#eeeeec}
.fine{margin-top:24px;font-size:12px;color:rgba(255,255,255,.5)}
.fine-link{font:inherit;font-size:12px;background:none;border:none;color:rgba(255,255,255,.8);text-decoration:underline;cursor:pointer}

.foot{background:#fff;color:var(--ink-soft);padding:40px clamp(20px,5vw,40px);border-top:1px solid var(--line)}
.foot-in{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.foot-brand{display:flex;align-items:center;gap:9px;color:var(--ink);font-size:14px}
.foot p{font-size:11.5px;line-height:1.7}

.reveal{opacity:0;transform:translateY(24px)}

@media(max-width:640px){.steps{grid-template-columns:1fr}.odds-grid{grid-template-columns:1fr}}

/* lively black surfaces — dark gradient + two soft lights drifting across */
.block--cta,.odds-card--rare,.step--accent{
  background:linear-gradient(152deg,#31312a 0%,#1b1b19 55%,#0e0e0d 100%);
  position:relative;overflow:hidden;
}
.block--cta::before,.odds-card--rare::before,.step--accent::before{
  content:"";position:absolute;z-index:0;pointer-events:none;
  width:78%;height:160%;left:-14%;top:-48%;
  background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 62%);
  filter:blur(6px);animation:gdriftA 13s ease-in-out infinite alternate;
}
.block--cta::after,.odds-card--rare::after,.step--accent::after{
  content:"";position:absolute;z-index:0;pointer-events:none;
  width:66%;height:160%;right:-14%;bottom:-48%;
  background:radial-gradient(circle,rgba(255,255,255,.13),rgba(255,255,255,0) 62%);
  filter:blur(6px);animation:gdriftB 17s ease-in-out infinite alternate;
}
.odds-card--rare::before,.step--accent::before{animation-duration:10s}
.block--cta .cta-in,.odds-card--rare>*,.step--accent>*{position:relative;z-index:1}
@keyframes gdriftA{0%{transform:translate(-14%,-4%) scale(1)}100%{transform:translate(22%,12%) scale(1.28)}}
@keyframes gdriftB{0%{transform:translate(14%,4%) scale(1)}100%{transform:translate(-20%,-12%) scale(1.34)}}
.cta-btn{position:relative;overflow:hidden}
.cta-btn::after{
  content:"";position:absolute;top:0;left:-60%;width:45%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(0,0,0,.06),transparent);
  transform:skewX(-18deg);animation:sheen 5.5s ease-in-out infinite;
}
@keyframes sheen{0%,70%{left:-60%}100%{left:130%}}
@media(prefers-reduced-motion:reduce){
  .block--cta::before,.block--cta::after,.odds-card--rare::before,.odds-card--rare::after,.step--accent::before,.step--accent::after,.cta-btn::after{animation:none}
}