:root{--ink:#1D1D1F;--muted:#6E6E73;--soft:#86868B;--bg:#F5F5F7;--panel:#FFFFFF;--line:rgba(0,0,0,.08);--blue:#0071E3;--link:#0066CC}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','SF Pro Display',Inter,'Helvetica Neue',Arial,sans-serif;
  font-size:17px;line-height:1.5;letter-spacing:-.011em;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
header.top{position:sticky;top:0;z-index:20;background:rgba(251,251,253,.78);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line)}
header.top .in{max-width:1024px;margin:0 auto;padding:0 16px;height:48px;display:flex;align-items:center;gap:22px}
.logo{font-weight:600;letter-spacing:.02em;font-size:19px;color:var(--ink)}
.logo:hover{text-decoration:none}
.logo i{font-style:normal;background:linear-gradient(90deg,#0A84FF,#BF5AF2,#FF375F);-webkit-background-clip:text;background-clip:text;color:transparent}
nav{display:flex;gap:18px;font-size:12.5px;align-items:center;overflow-x:auto;scrollbar-width:none;flex:1}
nav::-webkit-scrollbar{display:none}
nav a{color:rgba(0,0,0,.72);white-space:nowrap}
nav a:hover{color:#000;text-decoration:none}
nav a.on{color:#000;font-weight:600}
nav a.buy{margin-left:auto;background:var(--blue);color:#fff;padding:4px 12px;border-radius:99px;font-weight:500}
.wrap{max-width:1024px;margin:0 auto;padding:40px 16px 72px}
h1{font-size:clamp(34px,6vw,56px);line-height:1.07;letter-spacing:-.03em;font-weight:700;margin:.15em 0 .3em}
h2{font-size:clamp(26px,3.6vw,36px);letter-spacing:-.025em;line-height:1.12;font-weight:700;margin:2.2em 0 .5em}
h3{letter-spacing:-.02em}
.eyebrow{font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--soft);margin:0}
.lead{font-size:clamp(19px,2.4vw,23px);line-height:1.38;color:var(--muted);max-width:700px;letter-spacing:-.015em}
.btn{display:inline-block;padding:11px 22px;border-radius:99px;font-size:16px;font-weight:500;background:var(--blue);color:#fff}
.btn:hover{text-decoration:none;background:#0077ED}
.btn.ghost{background:transparent;color:#2997FF;box-shadow:inset 0 0 0 1px #2997FF}
/* hero */
.hero{background:#000;color:#F5F5F7;overflow:hidden;position:relative}
.hero::before{content:"";position:absolute;inset:-20%;background:radial-gradient(40% 50% at 72% 45%,rgba(191,90,242,.35),transparent 70%),radial-gradient(35% 45% at 85% 70%,rgba(10,132,255,.3),transparent 70%),radial-gradient(30% 40% at 60% 20%,rgba(255,159,10,.22),transparent 70%)}
.hero .in{position:relative;max-width:1024px;margin:0 auto;padding:72px 16px 80px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
@media(max-width:760px){.hero .in{grid-template-columns:1fr;padding:48px 16px 56px;text-align:center}.hero .lead{margin-left:auto;margin-right:auto}}
.hero h1{font-size:clamp(40px,7vw,72px);background:linear-gradient(95deg,#fff 0%,#fff 40%,#C9A7FF 70%,#FFB38A 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{color:#A1A1A6}
.hero .eyebrow{color:#FBE08A}
.hero .cta{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
@media(max-width:760px){.hero .cta{justify-content:center}}
.stage{display:flex;justify-content:center;perspective:1200px}
.stage .tilt{zoom:1.45}
.stage .tilt{box-shadow:0 30px 80px rgba(191,90,242,.35),0 10px 30px rgba(0,0,0,.6)}
.hero .note1{color:#86868B;font-size:13px;text-align:center;margin-top:14px}
/* panels */
.panels{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.panel{background:var(--panel);border-radius:22px;padding:26px;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.panel h3{margin:0 0 6px;font-size:21px}
.panel p{margin:0;color:var(--muted)}
.panel .k{font-size:13px;font-weight:600;color:var(--soft);margin-bottom:8px}
.subjects{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.subj{display:block;border-radius:22px;padding:22px 22px 60px;color:#fff;position:relative;overflow:hidden;box-shadow:0 8px 24px rgba(0,0,0,.08)}
.subj:hover{text-decoration:none;transform:translateY(-2px)}
.subj{transition:transform .25s}
.subj b{font-size:26px;display:block;letter-spacing:-.02em}
.subj span{opacity:.92;font-size:15px}
.rarities{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:900px){
  .rarities{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 12px}
  .rarity,.rarities>a{min-width:0}
  /* Fixed 63mm cards overflow 2-col cells under ~530px; scale to fit */
  /* Home uses .rarity wrappers; about nests .tilt under direct <a> children */
  .rarity .tilt,.rarities>a .tilt{zoom:min(1,calc((100vw - 44px) / 2 / 63mm))}
}
.rarity,.rarities>a{text-align:center}
.rarity .tilt,.rarities>a .tilt{margin:0 auto}
.rarity h3{margin:14px 0 2px;font-size:19px}
.rarity p{margin:0;color:var(--muted);font-size:15px}
.rarity .odds{display:inline-block;margin-top:8px;font-size:13px;font-weight:600;padding:3px 10px;border-radius:99px;background:#E8E8ED;color:#1D1D1F}
.rarity.m .odds{background:#1D1D1F;color:#FBE08A}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:28px 18px;margin-top:18px}
.tile{display:block;text-align:center;color:var(--ink)}
.tile:hover{text-decoration:none}
.tile .t{font-size:14px;color:var(--muted);margin-top:10px}
/* card effects on screen */
.tilt{display:inline-block;border-radius:3.4mm;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s;transform-style:preserve-3d;box-shadow:0 12px 30px rgba(0,0,0,.14),0 2px 6px rgba(0,0,0,.08)}
.tilt.live{transition:transform .08s linear}
.tilt .card .holo{background-size:250% 250%;background-position:var(--mx,30%) var(--my,30%)}
.tilt .card .shine{background:radial-gradient(circle at var(--mx,50%) var(--my,25%),rgba(255,255,255,.8),rgba(255,255,255,0) 48%);opacity:0;transition:opacity .25s}
.tilt.live .card .shine{opacity:.85}
.tilt .card.r-common .shine{mix-blend-mode:soft-light}
@keyframes drift{0%{background-position:0% 0%}100%{background-position:100% 100%}}
.tilt:not(.live) .card.r-rare .holo{animation:drift 7s ease-in-out infinite alternate}
.tilt:not(.live) .card.r-legendary .holo,.tilt:not(.live) .card.r-mystery .holo{animation:drift 4.5s ease-in-out infinite alternate}
@keyframes twinkle{0%,100%{opacity:.25}50%{opacity:1}}
.tilt .card .sparkle{animation:twinkle 2.4s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){.tilt .card .holo,.tilt .card .sparkle{animation:none!important}}
/* card page */
.cardpage{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:48px;align-items:start}
@media(max-width:760px){.cardpage{grid-template-columns:1fr}}
.cardpage .left{position:sticky;top:72px;text-align:center}
@media(max-width:760px){.cardpage .left{position:static}}
.cardpage .flipbox{zoom:1.3;display:inline-block}
.flip{cursor:pointer;perspective:1200px}
.flip .inner{position:relative;transition:transform .7s cubic-bezier(.2,.8,.2,1);transform-style:preserve-3d}
.flip.flipped .inner{transform:rotateY(180deg)}
.flip .inner>div{backface-visibility:hidden;-webkit-backface-visibility:hidden}
.flip .inner>div+div{position:absolute;inset:0;transform:rotateY(180deg)}
.hint{font-size:13px;color:var(--soft);margin-top:12px}
details{background:var(--panel);border-radius:16px;padding:14px 18px;margin:12px 0;box-shadow:0 1px 4px rgba(0,0,0,.04)}
summary{cursor:pointer;font-weight:600;color:var(--link)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:14px;font-weight:500;border-radius:99px;padding:4px 14px;color:#fff}
.chip:hover{text-decoration:none;filter:brightness(1.05)}
.formula{font-family:-apple-system,'SF Pro Display',Inter,sans-serif;font-weight:600;font-size:clamp(20px,5vw,28px);letter-spacing:-.02em;padding:12px 22px;border-radius:16px;display:inline-block}
.meta{color:var(--muted);font-size:15px;margin-top:-6px}
.cardpage h2{font-size:24px;margin:1.6em 0 .4em}
.timeline{position:relative;margin:28px 0;padding-left:30px;border-left:2px solid #D2D2D7}
.tl{position:relative;margin:0 0 22px;background:var(--panel);border-radius:16px;padding:14px 18px;box-shadow:0 1px 4px rgba(0,0,0,.04)}
.tl::before{content:"";position:absolute;left:-39px;top:20px;width:14px;height:14px;border-radius:50%;background:var(--g);box-shadow:0 0 0 4px var(--bg)}
.tl .y{font-weight:600;font-size:14px;color:var(--c)}
.tl a{color:var(--ink);font-weight:600}
.duel{display:flex;gap:28px;align-items:center;flex-wrap:wrap}
form .row{display:grid;grid-template-columns:1fr 90px 80px;gap:12px;align-items:center;padding:16px 0;border-bottom:1px solid #D2D2D7}
input,select,textarea{font:inherit;padding:11px 14px;border:1px solid #D2D2D7;border-radius:12px;width:100%;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(0,113,227,.15)}
label{font-size:14px;color:var(--muted);display:block;margin:14px 0 6px}
button{font:inherit;font-weight:500;background:var(--blue);color:#fff;border:0;border-radius:99px;padding:12px 26px;cursor:pointer}
button:hover{background:#0077ED}
.note{background:#fff;border-radius:14px;padding:12px 16px;font-size:15px;box-shadow:inset 0 0 0 1px #F5D98B;color:#6B4E00;background:#FFFBEB}
.formbox{background:var(--panel);border-radius:22px;padding:8px 26px 26px;box-shadow:0 2px 10px rgba(0,0,0,.04);max-width:680px}
footer{color:var(--soft);font-size:12px;border-top:1px solid #D2D2D7}
footer .in{max-width:1024px;margin:0 auto;padding:18px 16px 28px}
.about section{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:30px 0;border-bottom:1px solid #D2D2D7}
.about section:last-child{border-bottom:0}
.about .num{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#fff;background:linear-gradient(140deg,#64D2FF,#0A84FF 50%,#5E5CE6);box-shadow:0 6px 16px rgba(10,132,255,.25)}
.about h2{margin:4px 0 10px;font-size:clamp(24px,3vw,30px)}
.about p{font-size:19px;line-height:1.55;max-width:680px;margin:0 0 14px;color:#1D1D1F}
.about .rlist{font-size:19px;line-height:1.55;padding-left:22px;margin:0 0 14px;max-width:680px}
@media(max-width:600px){.about section{grid-template-columns:1fr;gap:6px}}
@media print{header.top,.demo,footer,.rarities{display:none}.about p,.about .rlist{font-size:13pt}.about section{break-inside:avoid;padding:14px 0}.panel{display:none}}
/* SparkON wordmark */.logo{display:block;width:132px;height:21px;background:url(logo.svg) no-repeat left center/contain;font-size:0;color:transparent}.logo i{display:none}
.demo{position:fixed;right:12px;bottom:12px;width:36px;height:36px;box-sizing:border-box;padding:0;justify-content:center;background:rgba(29,29,31,.8);backdrop-filter:blur(10px);color:#fff;border-radius:50%;display:inline-flex;align-items:center;cursor:pointer;user-select:none;-webkit-user-select:none}.demo:hover{background:rgba(29,29,31,.95)}.demo:focus-visible{outline:2px solid #fff;outline-offset:2px}.demo .demo-icon{flex:none;display:inline-block;line-height:1;font-size:19px;opacity:.95}

.card{width:63mm;height:88mm;box-sizing:border-box;border-radius:3.4mm;overflow:hidden;position:relative;padding:1.5mm;
  font-family:-apple-system,BlinkMacSystemFont,'SF Pro Display','SF Pro Text',Inter,'Helvetica Neue',Arial,sans-serif;color:#1D1D1F;-webkit-font-smoothing:antialiased;text-align:left;background:linear-gradient(160deg,#FFFFFF,#D9D9DE);
  box-shadow:inset 0 0 0 .25mm rgba(0,0,0,.08)}
.card .frame{height:100%;box-sizing:border-box;border-radius:2.4mm;background:#fff;display:flex;flex-direction:column;
  padding:2.2mm 2.4mm 1.7mm;position:relative;overflow:hidden}
.card.r-rare{background:linear-gradient(135deg,#FAFAFC 0%,#C7C7CC 20%,#FFFFFF 38%,#A1A1A6 58%,#F2F2F7 78%,#C7C7CC 100%)}
.card.r-legendary{background:linear-gradient(135deg,#FFF4C2 0%,#E3B64F 18%,#FFF1B8 36%,#B8862B 55%,#FBE08A 74%,#C99A3A 90%,#FFF1B8 100%)}
.card.r-legendary .frame{background:linear-gradient(180deg,#FFFDF6 0%,#FFF5DA 100%)}
.card.r-mystery{background:#050507;padding:2.9mm}
.card .top{display:flex;justify-content:space-between;align-items:flex-start;gap:1.5mm}
.card .name{font-size:10.6pt;font-weight:700;letter-spacing:-.022em;line-height:1.06}
.card .sv{font-size:6.2pt;color:#86868B;margin-top:.5mm;letter-spacing:-.005em}
.card .gem svg{width:100%;height:100%}
.card .gem{width:5.4mm;height:5.4mm;border-radius:50%;flex:none;display:grid;place-items:center;font-size:6.6pt;font-weight:700;color:#fff;
  background:var(--g);box-shadow:0 .3mm .8mm rgba(0,0,0,.22),inset 0 0 0 .3mm rgba(255,255,255,.65)}
.card.r-rare .gem{background:linear-gradient(135deg,#FAFAFC 0%,#C7C7CC 20%,#FFFFFF 38%,#A1A1A6 58%,#F2F2F7 78%,#C7C7CC 100%);color:#3A3A3C}
.card.r-legendary .gem{background:linear-gradient(135deg,#FFF4C2 0%,#E3B64F 18%,#FFF1B8 36%,#B8862B 55%,#FBE08A 74%,#C99A3A 90%,#FFF1B8 100%);color:#5C3D00}
.card .art{flex:1;margin:1.8mm 0 1.7mm;border-radius:2mm;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;background:var(--g)}
.card .art svg{width:88%;height:auto;max-height:38mm;position:relative;z-index:1;filter:drop-shadow(0 .5mm .9mm rgba(0,0,0,.18))}
.card .art .glow{position:absolute;inset:0;background:radial-gradient(90% 70% at 25% 12%,rgba(255,255,255,.55),rgba(255,255,255,0) 60%)}
.card .holo{position:absolute;inset:0;background:repeating-linear-gradient(115deg,rgba(255,55,95,.0) 0%,rgba(255,159,10,.42) 7%,rgba(255,214,10,.42) 13%,rgba(48,209,88,.42) 19%,rgba(100,210,255,.45) 25%,rgba(191,90,242,.45) 31%,rgba(255,55,95,.0) 38%);background-size:180% 180%;mix-blend-mode:overlay;z-index:2;pointer-events:none}
.card .sparkle{position:absolute;inset:0;z-index:3;pointer-events:none;
  background:radial-gradient(circle at 18% 22%,#fff 0 .35mm,transparent .5mm),radial-gradient(circle at 78% 30%,#fff 0 .25mm,transparent .4mm),
  radial-gradient(circle at 64% 76%,#fff 0 .3mm,transparent .45mm),radial-gradient(circle at 30% 70%,#fff 0 .2mm,transparent .35mm),
  radial-gradient(circle at 88% 64%,#fff 0 .2mm,transparent .35mm)}
.card .type{display:flex;justify-content:space-between;font-size:5.7pt;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--ink)}
.card .foot{font-size:6.1pt;color:#6E6E73;margin-top:.7mm;line-height:1.3}
.card .foot b{color:#1D1D1F;font-weight:600}
.card .set{display:flex;justify-content:space-between;font-size:5pt;letter-spacing:.16em;color:#AEAEB2;margin-top:1mm;font-weight:600}
.card .shine{position:absolute;inset:0;pointer-events:none;z-index:4;border-radius:inherit;opacity:0;
  background:linear-gradient(115deg,rgba(255,255,255,0) 32%,rgba(255,255,255,.7) 46%,rgba(255,255,255,0) 60%);mix-blend-mode:soft-light}
.card.r-rare .shine,.card.r-legendary .shine,.card.r-mystery .shine{opacity:.8}
.card.r-legendary .frame>.holo{opacity:.35}

/* back */
.card.back .frame{padding:0}
.card.back .head{padding:2mm 2.4mm 1.6mm;display:flex;justify-content:space-between;align-items:center;gap:1.5mm}
.card.back .head .name{font-size:8.6pt}
.card.back .bar{height:1mm;background:var(--g)}
.card.back .body{padding:2mm 2.6mm 0;font-size:7.3pt;line-height:1.35;flex:1;display:flex;flex-direction:column;gap:1.5mm;letter-spacing:-.005em}
.card.back .lbl{font-size:5.2pt;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:#86868B;display:block;margin-bottom:.3mm}
.card.back .formula{font-size:10.2pt;font-weight:600;text-align:center;padding:1.5mm 1mm;border-radius:1.8mm;color:var(--ink);background:var(--t);
  font-family:-apple-system,'SF Pro Display',Inter,sans-serif;letter-spacing:-.01em}
.card.back ul{margin:0;padding-left:3.2mm}
.card.back .bottom{display:flex;align-items:flex-end;gap:2mm;padding:0 2.6mm 2mm}
.card.back .qr{width:14mm;height:14mm;flex:none;background:#fff;border-radius:1mm;padding:.5mm;box-sizing:border-box}
.card.back .qr svg{width:100%;height:100%;display:block}
.card.back .scan{font-size:5.6pt;color:#86868B;line-height:1.35}
.card.back .scan b{color:#1D1D1F;letter-spacing:.14em;font-size:5.2pt}

/* mystery */
.card.r-mystery .frame{background:radial-gradient(130% 90% at 50% 0%,#2C2C31 0%,#111114 55%,#050507 100%);color:#F5F5F7;padding:4.2mm}
.card .digits{position:absolute;font-family:'SF Mono',Menlo,Consolas,monospace;font-size:4.7pt;line-height:1;letter-spacing:.08em;white-space:nowrap;overflow:hidden;
  color:transparent;background:linear-gradient(135deg,#FFF4C2 0%,#E3B64F 18%,#FFF1B8 36%,#B8862B 55%,#FBE08A 74%,#C99A3A 90%,#FFF1B8 100%);-webkit-background-clip:text;background-clip:text;opacity:.95}
.card .digits.t{top:.95mm;left:3mm;right:3mm}
.card .digits.b{bottom:.95mm;left:3mm;right:3mm;transform:rotate(180deg)}
.card .digits.l{top:3mm;left:.95mm;width:82mm;transform-origin:0 0;transform:rotate(90deg) translate(0,-100%);}
.card .digits.r{top:3mm;right:.95mm;width:82mm;transform-origin:100% 0;transform:rotate(-90deg) translate(0,-100%);}
.card.r-mystery .name{color:#fff}
.card.r-mystery .sv{color:#98989D}
.card.r-mystery .gem{background:linear-gradient(135deg,#FFF4C2 0%,#E3B64F 18%,#FFF1B8 36%,#B8862B 55%,#FBE08A 74%,#C99A3A 90%,#FFF1B8 100%);color:#3D2A00}
.card.r-mystery .art{background:radial-gradient(80% 70% at 50% 45%,#2A2A30 0%,#0B0B0E 100%);box-shadow:inset 0 0 0 .25mm rgba(255,241,184,.5)}
.card.r-mystery .art .holo{opacity:.75}
.card.r-mystery .type{color:#E3B64F}
.card.r-mystery .foot{color:#98989D} .card.r-mystery .foot b{color:#F5F5F7}
.card.r-mystery .set{color:#E3B64F}
.card.r-mystery.back .frame{padding:0}
.card.r-mystery.back .body{color:#E5E5EA}
.card.r-mystery.back .lbl{color:#E3B64F}
.card.r-mystery.back .formula{background:rgba(255,255,255,.07);color:#FBE08A;box-shadow:inset 0 0 0 .25mm rgba(255,241,184,.35)}
.card.r-mystery.back .bar{background:linear-gradient(135deg,#FFF4C2 0%,#E3B64F 18%,#FFF1B8 36%,#B8862B 55%,#FBE08A 74%,#C99A3A 90%,#FFF1B8 100%)}
.card.r-mystery.back .scan{color:#98989D} .card.r-mystery.back .scan b{color:#FBE08A}

/* challenge */
.card.challenge{background:linear-gradient(160deg,#48484A,#1C1C1E)}
.card.challenge .frame{background:#1C1C1E;color:#F5F5F7}
.card.challenge .kicker{display:flex;justify-content:space-between;font-size:5.6pt;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#FFD60A}
.card.challenge .ctext{font-size:11.6pt;font-weight:700;line-height:1.14;letter-spacing:-.02em;margin-top:1.4mm}
.card.challenge .ask{font-size:6.8pt;margin-top:1.2mm;color:#AEAEB2}
.card.challenge .art{background:linear-gradient(140deg,#FFE55C 0%,#FFD60A 40%,#FF9F0A 100%);flex:1;margin:2mm 0 1.6mm}
.card.challenge .art svg{max-height:26mm;filter:none}
.card.challenge .foot{color:#AEAEB2}
.card.challenge .set{color:#636366}
.card.challenge.back .frame{background:#fff;color:#1D1D1F}
.card.challenge.back .bar{background:linear-gradient(90deg,#FFD60A,#FF9F0A)}
.card.challenge.back .answers{display:flex;flex-wrap:wrap;gap:1mm}
.card.challenge.back .chip{font-size:6.2pt;font-weight:600;color:#fff;border-radius:5mm;padding:.6mm 2.1mm}
.card.challenge.back .num{font-size:8.4pt;font-weight:600;text-align:center;padding:1.3mm;background:#F5F5F7;border-radius:1.8mm}

/* Legal pages */
.legal h2{font-size:22px;margin:1.6em 0 .4em}
.legal p,.legal ul{max-width:720px;color:#1D1D1F;font-size:17px;line-height:1.55}
.legal ul{padding-left:1.2em}
footer .in a{color:var(--muted)}
footer .in a:hover{color:var(--ink)}
/* R18 focus for flips */
.flip{outline:none}
.flip:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:4mm}
/* R19 mobile nav */
.nav-toggle{display:none;margin-left:auto;background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:99px;padding:6px 14px;font-size:13px;font-weight:600;cursor:pointer}
.nav-toggle:hover{background:#fff}
.nav-toggle:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
@media(max-width:760px){
  header.top .in{height:auto;min-height:48px;flex-wrap:wrap;padding:8px 16px;gap:8px 12px}
  .nav-toggle{display:inline-flex;align-items:center}
  header.top nav{display:none;flex-basis:100%;flex-direction:column;align-items:stretch;gap:0;overflow:visible;padding:4px 0 8px}
  header.top.nav-open nav{display:flex}
  header.top nav a{padding:10px 4px;border-bottom:1px solid var(--line);white-space:normal}
  header.top nav a.buy{margin-left:0;margin-top:8px;text-align:center}
  /* Readable challenge backs outside print card size */
  .challenge-readable{display:block;margin-top:12px;padding:14px 16px;background:#fff;border-radius:14px;box-shadow:0 1px 4px rgba(0,0,0,.04);font-size:16px;line-height:1.45;color:var(--ink)}
  .challenge-readable .lbl{display:block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--soft);margin:10px 0 4px}
  .challenge-readable .chips{margin:6px 0}
}
@media(min-width:761px){
  .challenge-readable{margin-top:14px;padding:14px 16px;background:#fff;border-radius:14px;box-shadow:0 1px 4px rgba(0,0,0,.04);font-size:16px;line-height:1.45}
  .challenge-readable .lbl{display:block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--soft);margin:10px 0 4px}
}