/* HEART OF AFRICA v5: premium layer on top of hoa.css (theme A, platinum ice). */
:root{
  --ease:cubic-bezier(.2,.7,.2,1); --ease2:cubic-bezier(.65,0,.35,1);
  --mine-haze:#ece9f1;
  --frost:linear-gradient(160deg,rgba(255,255,255,.88),rgba(246,245,250,.66) 55%,rgba(240,239,246,.6));
  --hair:linear-gradient(120deg,rgba(255,255,255,1),rgba(255,214,236,.75) 25%,rgba(200,230,246,.65) 45%,rgba(255,255,255,.2) 62%,rgba(214,240,222,.7) 85%,rgba(255,240,214,.8));
  --sheen:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.0) 38%,rgba(255,255,255,.75) 48%,rgba(255,226,242,.45) 52%,rgba(214,238,250,.35) 56%,transparent 66%);
}

/* ---------- living background: slow drifting light, GPU transform only ---------- */
body::before{content:"";position:fixed;inset:-20vmax;z-index:0;pointer-events:none;opacity:.75;
  background:
    radial-gradient(38vmax 30vmax at 22% 30%,rgba(255,220,236,.42),transparent 70%),
    radial-gradient(34vmax 28vmax at 78% 64%,rgba(206,232,246,.42),transparent 70%),
    radial-gradient(30vmax 24vmax at 55% 12%,rgba(226,244,226,.30),transparent 70%);
  animation:drift 46s var(--ease2) infinite alternate;will-change:transform}
@keyframes drift{0%{transform:translate3d(-2%,-1%,0) rotate(0deg)}100%{transform:translate3d(3%,2%,0) rotate(8deg)}}

/* ---------- typography rhythm ---------- */
body{font-size:16px;line-height:1.7;letter-spacing:.003em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.sect{padding:132px 24px 34px}
.sect-h{margin-bottom:56px}
.sect-h .kicker{gap:12px;font-size:11.5px;letter-spacing:.42em}
.sect-h .lede{font-size:17px;line-height:1.75;max-width:620px;color:var(--mute)}
h2{letter-spacing:.035em}
h3{letter-spacing:.045em}
.lede{line-height:1.75}
.fine{line-height:1.65}

/* section header: soft blur-in when it scrolls into view */
.sect-h.reveal{filter:blur(8px);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease),filter 1.1s var(--ease)}
.sect-h.reveal.in{filter:none}
.reveal{transition-duration:1s}

/* ---------- header ---------- */
.bar{padding-top:12px;padding-bottom:12px;background:linear-gradient(180deg,rgba(252,251,251,.86),rgba(247,246,249,.66));
  backdrop-filter:blur(18px) saturate(1.35);-webkit-backdrop-filter:blur(18px) saturate(1.35);box-shadow:0 1px 0 rgba(255,255,255,.7) inset,0 10px 30px -18px rgba(var(--shRGB),.35)}
.brand{gap:12px;color:var(--acc2);transition:opacity .3s}
.brand-gem{width:20px;height:auto;flex:none;filter:drop-shadow(0 1px 1.2px rgba(var(--shRGB),.35)) drop-shadow(0 0 6px rgba(255,255,255,.9));transition:transform .6s var(--ease);animation:gemFloat 6s ease-in-out infinite}
.brand{position:relative}
.brand::before{content:"";position:absolute;left:12px;top:2px;width:10px;height:10px;pointer-events:none;
  background:radial-gradient(circle,rgba(255,255,255,1) 0 12%,transparent 13%),conic-gradient(from 45deg,transparent 0 10%,rgba(255,255,255,.95) 12.5%,transparent 15% 35%,rgba(255,255,255,.95) 37.5%,transparent 40% 60%,rgba(255,255,255,.95) 62.5%,transparent 65% 85%,rgba(255,255,255,.95) 87.5%,transparent 90%);
  border-radius:50%;opacity:0;animation:gemWink 5.5s ease-in-out infinite 1.2s;mix-blend-mode:screen;filter:drop-shadow(0 0 3px #fff)}
.brand:hover .brand-gem{transform:rotate(-8deg) scale(1.08)}
@keyframes gemFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-1.5px)}}
@keyframes gemWink{0%,82%,100%{opacity:0;transform:scale(.3) rotate(0)}88%{opacity:1;transform:scale(1.25) rotate(45deg)}94%{opacity:0;transform:scale(.4) rotate(90deg)}}
.links a{transition:color .3s}
.lang button{transition:background .3s,color .3s}

/* ---------- buttons: press + hover lift ---------- */
.btn{transition:transform .35s var(--ease),box-shadow .35s,background .3s,border-color .3s}
.btn:active:not(:disabled){transform:translateY(0) scale(.975)}
.btn.ghost{background:linear-gradient(180deg,rgba(255,255,255,.75),rgba(255,255,255,.35));box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 6px 18px -10px rgba(var(--shRGB),.4)}
.btn.ghost:hover{transform:translateY(-2px)}

/* ---------- frosted glass cards with a hover sheen ---------- */
.glass,.step,.tier{background-image:var(--frost)}
.glass{box-shadow:inset 0 1px 0 rgba(255,255,255,.95),inset 0 -1px 0 rgba(var(--shRGB),.04),0 24px 64px -28px rgba(var(--shRGB),.38),0 2px 6px -2px rgba(var(--shRGB),.08)}
.ctr,.panel.glass,.mine-feed,.step,.stat-table{overflow:hidden}
.ctr::after,.panel.glass::after,.step::after,.mine-feed::after{content:"";position:absolute;inset:-1px;pointer-events:none;border-radius:inherit;background:var(--sheen);
  transform:translate3d(-110%,0,0);transition:transform 1.1s var(--ease)}
.ctr:hover::after,.panel.glass:hover::after,.step:hover::after,.mine-feed:hover::after{transform:translate3d(110%,0,0)}
.ctr{transition:transform .5s var(--ease),box-shadow .5s}
.ctr:hover{transform:translateY(-3px)}
.panel.glass{transition:transform .5s var(--ease),box-shadow .5s}
.panel.glass:hover{box-shadow:inset 0 1px 0 rgba(255,255,255,.95),0 30px 70px -28px rgba(var(--shRGB),.45)}

/* ---------- hero: counter-rotating rings with a travelling glint ---------- */
.hero-stone .orbit{will-change:transform}
.orbit.o1{animation:spinR 140s linear infinite}
.orbit.o2{animation:spin 64s linear infinite;border-color:rgba(var(--accRGB),.16)}
.orbit .glint{position:absolute;inset:-1px;border-radius:50%;pointer-events:none;will-change:transform;
  background:conic-gradient(from 0deg,transparent 0 62%,rgba(255,255,255,0) 66%,rgba(214,236,250,.55) 72%,rgba(255,255,255,1) 76%,rgba(255,214,236,.6) 79%,transparent 86%);
  -webkit-mask:radial-gradient(closest-side,transparent calc(100% - 3px),#000 calc(100% - 2px),#000 calc(100% - .5px),transparent 100%);
          mask:radial-gradient(closest-side,transparent calc(100% - 3px),#000 calc(100% - 2px),#000 calc(100% - .5px),transparent 100%)}
.orbit.o2 .glint{animation:spin 19s linear infinite}
.orbit.o1 .glint{inset:0;animation:spinR 27s linear infinite;
  background:conic-gradient(from 180deg,transparent 0 70%,rgba(255,226,242,.0) 72%,rgba(255,255,255,.95) 80%,rgba(206,232,246,.5) 84%,transparent 90%);
  -webkit-mask:none;mask:none}
@keyframes spinR{to{transform:rotate(-360deg)}}

/* ---------- ticker band (seamless, pauses on hover) ---------- */
.ticker-band{position:relative;z-index:1;overflow:hidden;padding:17px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(255,255,255,.55),rgba(250,240,247,.75) 30%,rgba(238,246,251,.75) 70%,rgba(255,255,255,.55));background-size:200% 100%;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),inset 0 -1px 0 rgba(255,255,255,.6);
  -webkit-mask:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  animation:bandglow 18s ease-in-out infinite alternate}
@keyframes bandglow{to{background-position:100% 0}}
.tk-rail{display:flex;width:max-content;animation:tkroll 52s linear infinite;will-change:transform}
.tk-group{display:flex;align-items:center;flex:none}
.tk-item{padding:0 30px;white-space:nowrap;font:500 14.5px/1 var(--display);letter-spacing:.22em;text-transform:uppercase;color:var(--soft)}
html[lang^=zh] .tk-item{font:700 15px/1 var(--sans);letter-spacing:.32em}
.tk-sep{flex:none;width:7px;height:7px;transform:rotate(45deg);border-radius:1.5px;background:linear-gradient(135deg,#fff,#c9cfda 45%,#f2d4e4 70%,#cfe6f2);box-shadow:0 0 8px rgba(255,255,255,.9),0 0 0 1px rgba(var(--accRGB),.18)}
@keyframes tkroll{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

/* ---------- tiers: live BNB price first ---------- */
.tier{padding:28px 26px 24px}
.tier .tprice{display:flex;align-items:baseline;gap:6px;font:500 46px/1 var(--display);margin:16px 0 4px;letter-spacing:.01em;font-variant-numeric:lining-nums tabular-nums}
.tier .tprice .approx{font:400 26px/1 var(--serif);font-style:normal;color:var(--acc)}
.tier .tprice small{font:600 13px/1 var(--sans);letter-spacing:.14em;color:var(--acc2);margin-left:4px}
.tier .tusd{display:block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);margin-bottom:12px}
.tier .tamt{padding-top:12px;border-top:1px solid var(--line)}

/* ---------- rules: numbered explainer ---------- */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.step{position:relative;display:grid;grid-template-columns:62px minmax(0,1fr);gap:20px;align-items:start;padding:26px 28px 26px 24px;border:1px solid var(--line);border-radius:var(--r);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.95),0 18px 50px -30px rgba(var(--shRGB),.4);transition:transform .5s var(--ease),border-color .4s,box-shadow .5s;min-width:0}
.step::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;background:var(--hair);opacity:.55;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;transition:opacity .4s}
.step:hover{transform:translateY(-3px);border-color:var(--line2);box-shadow:inset 0 1px 0 #fff,0 26px 60px -30px rgba(var(--shRGB),.5)}
.step:hover::before{opacity:1}
.step-n{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;font:500 21px/1 var(--display);letter-spacing:.04em;color:var(--acc2);
  background:radial-gradient(circle at 35% 30%,#fff,rgba(244,242,248,.9) 60%,rgba(230,228,238,.9));box-shadow:inset 0 1px 0 #fff,0 0 0 1px var(--line2),0 8px 20px -10px rgba(var(--shRGB),.5)}
.step-b{min-width:0}
.step h3{margin:4px 0 8px;font-size:21px;line-height:1.25}
.step p{margin:0;color:var(--mute);font-size:15.5px;line-height:1.7}
.step.wide{grid-column:1/-1}
.reveal .step{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease),border-color .4s,box-shadow .5s}
.reveal.in .step{opacity:1;transform:none}
.reveal.in .step:nth-child(2){transition-delay:.06s}.reveal.in .step:nth-child(3){transition-delay:.12s}.reveal.in .step:nth-child(4){transition-delay:.18s}
.reveal.in .step:nth-child(5){transition-delay:.24s}.reveal.in .step:nth-child(6){transition-delay:.3s}.reveal.in .step:nth-child(7){transition-delay:.36s}
.reveal.in .step:nth-child(8){transition-delay:.42s}.reveal.in .step:nth-child(9){transition-delay:.48s}.reveal.in .step:nth-child(10){transition-delay:.54s}
.reveal.in .step:hover{transform:translateY(-3px);transition-delay:0s}
.release{display:grid;grid-template-columns:repeat(5,minmax(0,1fr)) minmax(0,1.3fr);gap:10px;margin-top:18px}
.rel{position:relative;overflow:hidden;padding:12px 14px 16px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.7);box-shadow:inset 0 1px 0 #fff}
.rel span{display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim)}
.rel b{display:block;margin-top:4px;font:500 26px/1.1 var(--display);color:var(--text)}
.rel i{position:absolute;left:0;bottom:0;height:3px;width:var(--v);background:var(--metergrad);border-radius:0 3px 3px 0}
.rel.then{background:linear-gradient(135deg,rgba(255,255,255,.9),rgba(246,236,244,.85) 50%,rgba(232,242,248,.85))}
.rel.then small{display:block;font-size:12px;color:var(--mute);margin-top:2px}
.weights{display:grid;gap:10px;margin-top:18px}
.wt{display:grid;grid-template-columns:52px minmax(0,1fr) auto auto;gap:14px;align-items:center;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.65)}
.wt-u{font:500 18px/1 var(--display);color:var(--acc2)}
.wt-bar{height:8px;border-radius:99px;background:var(--track);overflow:hidden}
.wt-bar i{display:block;height:100%;width:var(--w);border-radius:99px;background:var(--metergrad)}
.wt.tier0 .wt-bar i{background:linear-gradient(90deg,#c9ced8,var(--tier0))}.wt.tier1 .wt-bar i{background:linear-gradient(90deg,#f1cbd8,var(--tier1))}.wt.tier2 .wt-bar i{background:linear-gradient(90deg,#d6cdf1,var(--tier2))}
.wt-n{font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--soft);white-space:nowrap}
.wt-d{font-size:12.5px;color:var(--mute);white-space:nowrap}

/* ---------- the live mine: refined frame + HUD ---------- */
.mine-stage{border:1px solid rgba(255,255,255,.9);box-shadow:0 0 0 1px var(--line),0 40px 80px -40px rgba(var(--shRGB),.55),inset 0 1px 0 #fff}
.mine-stage::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;border-radius:inherit;
  background:linear-gradient(180deg,rgba(255,255,255,.35),transparent 22%,transparent 70%,rgba(236,233,241,.55)),radial-gradient(120% 90% at 50% 40%,transparent 60%,rgba(var(--shRGB),.10))}
.mine-stage::after{box-shadow:inset 0 0 0 1px rgba(255,255,255,.5),inset 0 0 60px rgba(var(--shRGB),.08)}
.seal{padding:7px 16px 7px 8px;background:linear-gradient(160deg,rgba(255,255,255,.9),rgba(248,246,251,.7));border-color:rgba(255,255,255,.9);box-shadow:0 0 0 1px var(--line),0 10px 26px -14px rgba(var(--shRGB),.5);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.seal-fg{stroke:url(#sealGrad);stroke:var(--acc2)}
.mine-legend span{background:linear-gradient(160deg,rgba(255,255,255,.9),rgba(248,246,251,.72));border-color:rgba(255,255,255,.9);box-shadow:0 0 0 1px var(--line),0 8px 20px -12px rgba(var(--shRGB),.45);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.mine-tag::before{content:"";top:-11px;width:14px;height:19px;background:url(../img/pear-mark.png) center/contain no-repeat;filter:drop-shadow(0 1px 1px rgba(var(--shRGB),.4))}
.mine-feed h3{letter-spacing:.06em}
.ticker li{transition:background .3s}
.ticker li:hover{background:rgba(var(--accRGB),.05)}

/* ---------- small refinements ---------- */
.counters{gap:18px}
.ctr b{letter-spacing:.01em}
.helps p{border-left:2px solid var(--acc2);border-radius:0 14px 14px 0;box-shadow:inset 0 1px 0 rgba(255,255,255,.9);background:linear-gradient(90deg,rgba(255,255,255,.75),rgba(255,255,255,.25))}
.empty{background:linear-gradient(160deg,rgba(255,255,255,.6),rgba(255,255,255,.25))}
.addr{transition:border-color .3s,transform .4s var(--ease),box-shadow .4s}
.addr:hover{border-color:var(--line2);transform:translateX(3px);box-shadow:0 12px 30px -20px rgba(var(--shRGB),.5)}
.dlg{background:linear-gradient(165deg,rgba(255,255,255,.98),rgba(245,244,248,.96));box-shadow:0 40px 100px -30px rgba(var(--shRGB),.6),inset 0 1px 0 #fff}
.dlg[open]{animation:dlgin .45s var(--ease)}
@keyframes dlgin{from{opacity:0;transform:translateY(14px) scale(.98)}}
.qr{width:240px;padding:14px;box-shadow:0 0 0 1px var(--line),0 14px 34px -18px rgba(var(--shRGB),.5)}

/* ---------- responsive ---------- */
@media (max-width:880px){
  .tier{display:block;padding:22px 22px 20px}
  .tier .tprice{font-size:40px;min-width:0;margin:10px 0 2px}
  .steps{grid-template-columns:1fr}
  .release{grid-template-columns:repeat(3,minmax(0,1fr))}
  .rel.then{grid-column:span 3}
  .sect{padding-top:96px}
}
@media (max-width:440px){
  .sect{padding:80px 16px 18px}
  .sect-h{margin-bottom:40px}
  .sect-h .lede{font-size:15.5px}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px 18px 20px 16px}
  .step-n{width:42px;height:42px;font-size:16px}
  .step h3{font-size:18.5px}
  .step p{font-size:14.5px}
  .rel{padding:10px 10px 14px}.rel b{font-size:21px}.rel span{font-size:10px;letter-spacing:.08em}
  .wt{grid-template-columns:40px minmax(0,1fr) auto;gap:10px;padding:9px 12px}
  .wt-d{grid-column:2/-1;justify-self:start;margin-top:-4px}
  .tier .tprice{font-size:36px}
  .tk-item{padding:0 20px;font-size:13px}
  html[lang^=zh] .tk-item{font-size:14px}
  .ticker-band{padding:14px 0}
  .brand-gem{width:18px}
}


/* heading ornament: hairlines with a small pear-cut stone (replaces the old heart) */
h2::after{width:132px;height:16px;background:linear-gradient(90deg,#8d939e,#c7a9c4 45%,#9fbfcf 60%,#8d939e);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='132' height='16' viewBox='0 0 132 16'%3E%3Cdefs%3E%3ClinearGradient id='g'%3E%3Cstop offset='0' stop-color='%23000' stop-opacity='0'/%3E%3Cstop offset='1' stop-color='%23000'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M0 8h52' stroke='url(%23g)'/%3E%3Cpath d='M132 8H80' stroke='url(%23g)'/%3E%3Cpath d='M66 15C62.2 11.2 60.6 8.4 60.6 6.2a5.4 5.4 0 0 1 10.8 0c0 2.2-1.6 5-5.4 8.8Z' fill='none' stroke='%23000' stroke-width='1.1'/%3E%3Cpath d='M60.8 5.6h10.4M66 .9 63.4 5.6 66 15l2.6-9.4Z' fill='none' stroke='%23000' stroke-width='.7'/%3E%3C/svg%3E") center/contain no-repeat;
          mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='132' height='16' viewBox='0 0 132 16'%3E%3Cdefs%3E%3ClinearGradient id='g'%3E%3Cstop offset='0' stop-color='%23000' stop-opacity='0'/%3E%3Cstop offset='1' stop-color='%23000'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M0 8h52' stroke='url(%23g)'/%3E%3Cpath d='M132 8H80' stroke='url(%23g)'/%3E%3Cpath d='M66 15C62.2 11.2 60.6 8.4 60.6 6.2a5.4 5.4 0 0 1 10.8 0c0 2.2-1.6 5-5.4 8.8Z' fill='none' stroke='%23000' stroke-width='1.1'/%3E%3Cpath d='M60.8 5.6h10.4M66 .9 63.4 5.6 66 15l2.6-9.4Z' fill='none' stroke='%23000' stroke-width='.7'/%3E%3C/svg%3E") center/contain no-repeat}
.ticker{align-content:start}