/* Product-page pilot, scoped to the landing page; existing information pages stay intact. */
.product-landing{font-size:16px;line-height:1.65}
.product-landing .wrap{width:min(1120px,calc(100% - 48px))}
.product-landing .header-inner{min-height:76px;padding-block:12px;align-items:center;gap:16px}
.product-landing .brand{align-items:center;gap:10px}
.product-landing .brand img{width:42px;height:42px;border-radius:12px;flex-shrink:0}
.product-landing .brand-copy{display:block}
.product-landing .brand strong{font-size:17px;line-height:1.35}
.product-landing .brand small{display:none}
.product-landing .language{max-width:none}
.product-landing .language summary{min-height:44px;padding:9px 12px;border-radius:12px;font-size:13px;line-height:24px;white-space:nowrap}
.product-landing .language summary:focus:not(:focus-visible){outline:none}
.product-landing .hero{display:grid;grid-template-columns:1.06fr 1fr;gap:54px;align-items:center;padding-block:58px 52px}
.product-landing .hero-copy{grid-column:1;grid-row:1;min-width:0}
.product-landing .product-series{margin:0 0 12px;font-size:13px;font-weight:650;line-height:1.5;color:var(--color-link)}
.product-landing h1{font-size:clamp(36px,3.8vw,48px);line-height:1.16;letter-spacing:-.035em;margin:0 0 16px;overflow-wrap:normal}
.product-landing .product-intro{font-size:16px;line-height:1.7;max-width:39ch;margin:0}
.product-landing .product-facts{display:flex;gap:7px 15px;flex-wrap:wrap;list-style:none;padding:0;margin:20px 0 25px;font-size:12px;line-height:1.5;color:var(--color-text-secondary)}
.product-landing .product-facts li{display:flex;align-items:center;gap:7px}
.product-landing .product-facts li:before{content:"";width:4px;height:4px;flex-shrink:0;background:var(--color-link);border-radius:50%}
.product-landing .download{grid-column:auto;grid-row:auto;margin:0}
.product-landing .channels{display:grid;grid-template-columns:1fr 1fr;gap:10px;max-width:390px}
.product-landing .store-button{display:flex;align-items:center;justify-content:center;gap:11px;min-height:68px;width:100%;padding:11px 14px;border:1px solid var(--color-control-border);border-radius:14px;background:var(--color-surface);color:var(--color-text-primary);font:inherit;text-align:start;cursor:default;opacity:1;-webkit-text-fill-color:currentColor}
.product-landing .store-button>svg{width:23px;height:25px;flex-shrink:0}
.product-landing .store-button span{display:flex;flex-direction:column;gap:2px;min-width:0}
.product-landing .store-button strong{font-size:14px;line-height:1.35;white-space:nowrap;font-weight:650}
.product-landing .store-button small{font-size:11px;line-height:1.5;color:var(--color-text-secondary)}
.product-landing .download-status{font-size:11px;line-height:1.6;max-width:45ch;margin:10px 0 0;color:var(--color-text-secondary)}
.product-landing .how-link{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:8px 0;margin-top:8px;font-size:12px;line-height:1.5;text-decoration:none}
.product-landing .how-link:hover{text-decoration:underline}
.product-landing .hero-art{grid-column:2;grid-row:1;min-width:0;margin:0;min-height:300px;padding:30px 24px 26px;border-radius:26px;display:flex;flex-direction:column;justify-content:center;align-items:center;position:relative;overflow:hidden;background:radial-gradient(ellipse at 0 0,var(--color-primary-soft),transparent 70%),var(--color-surface-subtle)}
.product-landing .hero-art figcaption{font-size:11px;letter-spacing:.04em;line-height:1.5;margin:0 0 28px;color:var(--color-text-secondary);z-index:1}
.product-landing .puzzle-example{width:100%;z-index:1}
.product-landing .equation{gap:6px;flex-wrap:nowrap;font-size:21px;line-height:1.2;font-weight:500;white-space:nowrap}
.product-landing .equation b{display:grid;place-items:center;min-width:42px;height:52px;padding:6px;border-radius:12px;font-size:25px;font-weight:650;box-shadow:0 4px 0 var(--color-border)}
.product-landing .equation-result{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:22px;font-size:23px;direction:ltr}
.product-landing .equation-result b{display:grid;place-items:center;width:60px;height:54px;border:1px solid var(--color-control-border);border-radius:14px;background:var(--color-surface);font-size:29px;font-weight:650;box-shadow:0 4px 0 var(--color-border)}
.product-landing .art-lines{position:absolute;right:-30px;bottom:-75px;width:180px;height:180px;border:1px solid var(--color-control-border);border-radius:50%;opacity:.13;pointer-events:none}
.product-landing .art-lines:before,.product-landing .art-lines:after{content:"";position:absolute;inset:18px;border:1px solid var(--color-control-border);border-radius:50%}.product-landing .art-lines:after{inset:36px}
.product-landing .play-overview{padding-block:30px 24px;border-top:1px solid var(--color-border)}
.product-landing .play-overview>h2{font-size:24px;margin:0 0 20px;letter-spacing:-.02em}
.product-landing .overview-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:20px}
.product-landing .overview-card{border:1px solid var(--color-border);padding:24px;border-radius:18px;background:var(--color-surface)}
.product-landing .overview-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.product-landing .overview-heading h3{font-size:18px;line-height:1.4;margin:0;font-weight:650}
.product-landing .count,.product-landing .daily-mark{font-size:11px;white-space:nowrap;color:var(--color-text-secondary)}
.product-landing .overview-card>p{font-size:13px;line-height:1.7;margin:0 0 18px}
.product-landing .groups{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}
.product-landing .groups span{font-size:11px;line-height:1.5;padding:8px 10px;border-radius:8px;text-align:center}
.product-landing .daily-path{display:flex;align-items:center;gap:10px;height:76px;direction:ltr}
.product-landing .daily-path span{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--color-control-border);border-radius:12px;background:var(--color-surface-subtle);font-size:20px;font-weight:600}.product-landing .daily-path i{flex:1;max-width:55px;border-top:1px dashed var(--color-control-border)}
.product-landing .product-details{margin-bottom:10px;border-top:1px solid var(--color-border)}
.product-landing .info-disclosure{border-bottom:1px solid var(--color-border)}
.product-landing .info-disclosure summary{display:flex;align-items:center;justify-content:space-between;gap:20px;list-style:none;min-height:64px;font-size:14px;font-weight:600;cursor:pointer}
.product-landing .info-disclosure summary::-webkit-details-marker{display:none}
.product-landing .info-disclosure summary:after{content:"+";font-size:23px;font-weight:400}
.product-landing .info-disclosure[open] summary:after{content:"−"}
.product-landing .info-disclosure>div{max-width:720px;padding:0 0 22px;font-size:13px;line-height:1.9}
.product-landing .info-disclosure p{margin:0 0 10px}
.product-landing .footer{margin-top:38px;padding-block:30px}
.product-landing .footer h2{font-size:20px;margin-bottom:10px}
.product-landing .footer p,.product-landing .footer a{font-size:12px}
.product-landing .footer-grid{gap:32px}
@media(max-width:1000px){.product-landing .hero{gap:28px}.product-landing .hero-art{padding-inline:16px}.product-landing .equation{font-size:17px;gap:4px}.product-landing .equation b{min-width:35px;height:46px;font-size:22px}}
@media(max-width:760px){
  .product-landing .wrap{width:calc(100% - 36px)}
  .product-landing .header-inner{min-height:70px;gap:12px;padding-block:10px;align-items:center}
  .product-landing .brand img{width:38px;height:38px;border-radius:11px}
  .product-landing .brand strong{font-size:15px}
  .product-landing .language summary{font-size:12px;padding:9px 10px}
  .product-landing .hero{grid-template-columns:1fr;gap:26px;padding-block:28px 30px}
  .product-landing .hero-copy,.product-landing .hero-art{grid-column:1;grid-row:auto}
  .product-landing .product-series{font-size:12px;margin-bottom:10px}
  .product-landing h1{font-size:32px;line-height:1.18;margin-bottom:12px;letter-spacing:-.03em}
  .product-landing .product-intro{font-size:14px;line-height:1.65;max-width:39ch}
  .product-landing .product-facts{font-size:11px;gap:6px 12px;margin:16px 0 20px}
  .product-landing .channels{max-width:410px}
  .product-landing .store-button{min-height:64px;padding:10px 11px;gap:9px}
  .product-landing .store-button strong{font-size:13px}
  .product-landing .store-button>svg{width:20px;height:22px}
  .product-landing .download-status{font-size:10px;margin-top:9px}
  .product-landing .how-link{margin-top:3px;font-size:11px;min-height:40px}
  .product-landing .hero-art{min-height:180px;padding:18px 16px 20px;border-radius:20px}
  .product-landing .hero-art figcaption{font-size:10px;margin-bottom:16px}
  .product-landing .equation{gap:clamp(3px,1vw,6px);font-size:16px}
  .product-landing .equation>span{width:10px;flex:0 0 10px;text-align:center}
  .product-landing .equation b{width:clamp(30px,8.4vw,36px);min-width:0;flex-shrink:0;height:42px;padding:4px;font-size:clamp(18px,5vw,21px);border-radius:10px}
  .product-landing .equation-result{margin-top:14px;font-size:20px}
  .product-landing .equation-result b{width:48px;height:42px;font-size:24px;border-radius:10px}
  .product-landing .play-overview{padding-top:25px}
  .product-landing .play-overview>h2{font-size:22px;margin-bottom:17px}
  .product-landing .overview-grid{grid-template-columns:1fr;gap:14px}
  .product-landing .overview-card{padding:20px;border-radius:16px}
  .product-landing .overview-heading h3{font-size:16px}
  .product-landing .daily-path{height:58px;max-width:290px}
  .product-landing .info-disclosure summary{min-height:60px;font-size:13px}
  .product-landing .footer-grid{grid-template-columns:1fr 1fr;gap:20px}
  .product-landing .footer-brand{grid-column:1/-1}
  .product-landing .footer-brand p{max-width:44ch;margin-bottom:10px}
}
@media(max-width:359px){
  .product-landing .wrap{width:calc(100% - 32px)}
  .product-landing .brand{gap:8px}
  .product-landing .brand img{width:34px;height:34px;border-radius:9px}
  .product-landing .brand strong{font-size:13px}
  .product-landing .language summary{font-size:11px;padding-inline:8px}
  .product-landing .language summary:after{margin-inline-start:5px}
  .product-landing h1{font-size:29px}
  .product-landing .product-facts{gap:5px 9px;font-size:10px}
  .product-landing .store-button{padding-inline:9px;gap:7px}
  .product-landing .store-button strong{font-size:12px}
  .product-landing .store-button small{font-size:10px}
  .product-landing .equation{gap:4px;font-size:16px}
  .product-landing .equation b{width:30px;min-width:0;height:38px;font-size:18px}
  .product-landing .groups{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:761px) and (max-height:500px){
  .product-landing .header-inner{min-height:60px;padding-block:8px}
  .product-landing .brand img{width:34px;height:34px}
  .product-landing .hero{padding-block:20px;gap:24px}
  .product-landing .product-series{margin-bottom:6px;font-size:11px}
  .product-landing h1{font-size:29px;margin-bottom:8px}
  .product-landing .product-intro{font-size:13px;line-height:1.5}
  .product-landing .product-facts{margin:10px 0 12px;font-size:10px;gap:5px 10px}
  .product-landing .store-button{min-height:58px;padding:8px 10px}
  .product-landing .download-status{font-size:10px;margin-top:6px}
  .product-landing .how-link{margin-top:0;min-height:32px}
  .product-landing .hero-art{min-height:240px}
}
@media(prefers-reduced-motion:reduce){.product-landing *{scroll-behavior:auto;transition:none}}

.product-landing.product-geometry{--color-background:var(--bg);--color-surface:var(--surface);--color-text-primary:var(--ink);--color-text-secondary:var(--muted);--color-link:var(--brand);--color-border:var(--border);--color-control-border:#788C84;--color-primary-soft:var(--soft);--color-surface-subtle:#E9F2F4}
.product-landing.product-logic{--color-background:var(--brand-background);--color-surface:var(--brand-surface);--color-text-primary:var(--brand-textPrimary);--color-text-secondary:var(--brand-textSecondary);--color-link:var(--brand-link);--color-border:var(--brand-border);--color-control-border:var(--brand-controlBorder);--color-primary-soft:var(--brand-primarySoft);--color-surface-subtle:var(--brand-surfaceSubtle)}
.product-landing header.header{width:100%;padding:0;border-bottom:1px solid var(--color-border);background:var(--color-background);position:sticky;top:0;z-index:20}
.product-landing .header-inner{display:flex;justify-content:space-between;margin:auto;padding-inline:0}
.product-landing main.wrap{margin:auto;padding:0}
.product-landing h1{font-family:inherit;font-weight:650}
.product-landing .hero{min-height:0}
.product-landing .language{position:relative;margin-inline-start:auto;flex-shrink:0}
.product-landing .language summary{display:flex;align-items:center;gap:10px;list-style:none;cursor:pointer;border:1px solid var(--color-control-border);background:var(--color-surface)}
.product-landing .language summary::-webkit-details-marker{display:none}
.product-landing .language nav{position:absolute;inset-inline-end:0;top:calc(100% + 8px);width:210px;max-width:calc(100vw - 28px);max-height:calc(100svh - var(--header-height) - 20px);overflow:auto;background:var(--color-surface);padding:8px;border:1px solid var(--color-border);border-radius:14px;box-shadow:0 12px 32px #183a3618}
.product-landing .language nav a{display:flex;justify-content:space-between;min-height:44px;padding:10px 12px;font-size:13px;border-radius:8px;text-decoration:none}
.product-landing .language nav a:hover,.product-landing .language nav a[aria-current]{background:var(--color-primary-soft)}
.product-landing :is(a,button,summary,input):focus-visible{outline:2px solid var(--color-link);outline-offset:3px;border-radius:8px}
.product-landing .store-button[aria-disabled]{pointer-events:none}
.product-landing :is(section,details)[id]{scroll-margin-top:calc(var(--header-height) + 20px)}
.product-landing.product-geometry .hero-art{min-height:340px;padding:22px 24px;gap:15px}
.product-landing.product-geometry .game-shot{position:static;transform:none;max-height:260px;width:auto;max-width:100%;border-radius:12px;box-shadow:0 8px 24px #183a3618;border:1px solid var(--color-border)}
.product-landing.product-geometry .hero-art figcaption{position:static;max-width:100%;margin:0;order:2;background:transparent;padding:0;text-align:center}
.product-landing.product-geometry .play-overview .feature-grid{gap:16px}
.product-landing.product-geometry .feature-grid article{padding:20px;border-radius:16px;min-height:0}
.product-landing.product-geometry .feature-grid h3{font-size:17px;margin:8px 0}
.product-landing.product-geometry .feature-grid p{font-size:13px;margin:0}
.product-landing.product-geometry .feature-grid .feature-number{font-size:28px}
.product-landing.product-geometry .steps{display:grid;grid-template-columns:1fr;gap:12px}
.product-landing.product-geometry .steps article{padding:14px}
.product-landing.product-geometry .faq-list details{padding:12px 0}
.product-landing.product-geometry .footer-grid{margin:auto;padding:0}
.product-landing.product-geometry .copyright{font-size:11px;padding-top:22px}
.product-landing.product-logic .hero-art{align-items:stretch;min-height:0;padding:26px 30px;border:1px solid var(--color-border);box-shadow:none;gap:0}
.product-landing.product-logic .preview-label{font-size:11px;letter-spacing:.04em;color:var(--color-link)}
.product-landing.product-logic .preview-question{font-size:13px;line-height:1.6;margin:8px 0}
.product-landing.product-logic .number-demo{font-family:inherit;font-size:29px;line-height:1.3;padding:10px 0 16px;gap:8px;grid-template-columns:1fr 30px 1fr}
.product-landing.product-logic .number-demo i{font-size:20px}
.product-landing.product-logic #demo input{min-height:44px;font-size:20px;border-color:var(--color-control-border);background:var(--color-surface)}
.product-landing.product-logic #demo button{min-height:44px;padding:9px 18px;font-size:13px}
.product-landing.product-logic #demo-feedback{min-height:32px;font-size:12px;line-height:1.6;margin:9px 0 0}
.product-landing.product-logic .preview-foot{font-size:10px;line-height:1.5}
.product-landing.product-logic .logic-features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-landing.product-logic .logic-features article{border:1px solid var(--color-border);background:var(--color-surface);border-radius:16px;padding:22px}
.product-landing.product-logic .logic-features article>span{font-size:11px;color:var(--color-link)}
.product-landing.product-logic .logic-features h2{font-size:18px;line-height:1.4;margin:12px 0 10px}
.product-landing.product-logic .logic-features p{font-size:13px;margin:0}
.product-landing.product-logic .footer{width:100%;border-top:1px solid var(--color-border)}
.product-landing.product-logic .logic-footer{margin:auto;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.product-landing.product-logic .logic-footer nav{display:flex;gap:12px 20px;flex-wrap:wrap}
.product-landing.product-logic .logic-footer a{min-height:44px;display:inline-flex;align-items:center}
@media(max-width:760px){
 .product-landing.product-geometry .hero-art{min-height:0;padding:18px;gap:10px}
 .product-landing.product-geometry .game-shot{max-height:185px}
 .product-landing.product-geometry .play-overview .feature-grid{grid-template-columns:1fr 1fr;gap:12px}
 .product-landing.product-geometry .feature-grid article{padding:16px}
 .product-landing.product-geometry .feature-grid h3{font-size:15px}
 .product-landing.product-geometry .feature-grid p{font-size:12px}
 .product-landing.product-logic .hero-art{padding:20px 24px}
 .product-landing.product-logic .number-demo{font-size:26px;gap:6px;padding-block:8px 14px}
 .product-landing.product-logic .logic-features{grid-template-columns:1fr;gap:14px}
 .product-landing.product-logic .logic-features article{padding:20px}
 .product-landing.product-logic .logic-features h2{font-size:16px}
 .product-landing.product-logic .logic-footer{display:block}
 .product-landing.product-logic .logic-footer nav{gap:6px 20px;margin-top:10px}
}
@media(max-width:359px){.product-landing.product-geometry .play-overview .feature-grid{grid-template-columns:1fr}.product-landing.product-logic .brand strong{font-size:13px}}
@media(min-width:761px) and (max-height:500px){.product-landing.product-geometry .hero-art{min-height:260px}.product-landing.product-geometry .game-shot{max-height:190px}.product-landing.product-logic .hero-art{padding:18px 24px}.product-landing.product-logic .number-demo{font-size:24px;padding-block:6px 10px}}

.product-landing.product-geometry .play-overview>.eyebrow{display:none}
.product-landing.product-geometry .info-disclosure ol{padding-inline-start:20px}.product-landing.product-geometry .info-disclosure h3{font-size:16px}

.product-landing .hero{padding-inline:0}

.product-landing.product-draw{--bg:#F5F8F2;--brand:#306953;--soft:#E5F4DD;--color-surface-subtle:#E7F3EE}.product-draw h1{max-width:none;text-wrap:balance}.product-draw .product-intro{text-wrap:balance}.product-draw .draw-mark{width:190px;height:190px;object-fit:contain}.product-draw .hero-art{min-height:310px;gap:18px}.product-draw .hero-art figcaption{margin:0}.product-draw .draw-footer{display:flex;align-items:center;gap:10px 24px;flex-wrap:wrap;margin:auto}.product-draw .draw-footer a{min-height:44px;display:inline-flex;align-items:center}.product-draw .draw-footer span{font-size:11px;color:var(--muted)}@media(max-width:760px){.product-draw .hero-art{min-height:180px;gap:10px}.product-draw .draw-mark{width:125px;height:125px}}