/* Selected A presentation and retained comparison variants. */
:root[data-design]{--ink:#24364e;--muted:#52637a;--line:#d8e2e9;--brown:#294fc7;font-family:"Trebuchet MS","Microsoft YaHei",sans-serif;color:var(--ink);background:#fffaf4}
[data-design] [hidden]{display:none!important}
[data-design] body{background:var(--page,#fffaf4);color:var(--ink)}
[data-design] .wrap{width:calc(100% - 80px);max-width:1220px}
[data-design] h1,[data-design] h2,[data-design] h3,[data-design] .wordmark{font-family:"Trebuchet MS","Microsoft YaHei",sans-serif;letter-spacing:-.035em;font-weight:750}
[data-design] .nav{height:94px;border-bottom:1px solid transparent;gap:24px}
[data-design] .wordmark{display:flex;align-items:center;gap:5px;font-size:27px;letter-spacing:-1.2px;white-space:nowrap}
[data-design] .brand-number{font-size:39px;letter-spacing:-3px;color:#3159d6}
[data-design] .brand-name{color:var(--ink);font-weight:750;font-size:inherit}
[data-design] .nav nav{gap:26px;flex:1;justify-content:flex-end}
[data-design] .nav nav a{font-size:15px;color:var(--ink);font-weight:650}
[data-design] .nav nav a[aria-current=page]{text-decoration:underline;text-decoration-color:#ffb539;text-decoration-thickness:4px;text-underline-offset:7px}
[data-design] .pill{border:1.5px solid #cbd5e0;border-radius:16px;background:#fff;box-shadow:none;color:var(--ink);min-height:44px}
[data-design] .pill.dark,[data-design] .pill.selected{background:#294fc7;border-color:#294fc7;color:#fff;box-shadow:0 3px 0 #193991}
[data-design] .pill:hover:not(:disabled){border-color:#244ebe;box-shadow:0 3px 0 #244ebe22}
[data-design] .pill:active:not(:disabled){transform:translateY(2px);box-shadow:none}
[data-design] :is(a,button,input,summary):focus-visible{outline:3px solid #294fc7;outline-offset:4px}
[data-design] .quiet{color:#53647a}
.design-switcher{background:#fff;border-bottom:1px solid #e0e5ed;color:#35465d;font:13px "Trebuchet MS","Microsoft YaHei",sans-serif}
.design-switcher-inner{max-width:1220px;margin:auto;display:flex;align-items:center;gap:26px;padding:10px 0;min-height:56px}
.design-switcher nav{display:flex;gap:6px;flex:1;justify-content:center}
.design-switcher nav a{padding:8px 13px;border-radius:9px;border:1px solid transparent;min-height:36px}
.design-switcher nav a[aria-current=page]{color:#214ac1;background:#edf2ff;border-color:#b6c8fc;font-weight:700}
.design-overview-link{text-decoration:underline;text-underline-offset:4px}
.design-preview-note{color:#63748b;font-size:11px}
[data-design] .hub{padding:30px 0 58px;max-width:1220px}
.proposal-hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:32px;min-height:402px}
.proposal-hero h1{font-size:clamp(42px,4.6vw,65px);line-height:1.22;margin:0}
.proposal-intro{font-size:17px;line-height:1.8;margin:22px 0 25px;max-width:390px;color:#455a73}
.proposal-actions{display:flex;align-items:center;gap:23px;flex-wrap:wrap}
.proposal-pick{background:#ffcd48;color:#25374c;padding:15px 28px;border:2px solid #25374c;border-radius:16px;font-weight:750;box-shadow:0 4px 0 #25374c;min-height:54px;font-size:16px}
.proposal-pick:hover{background:#ffdb76;transform:translateY(-1px)}
.proposal-pick:active{transform:translateY(3px);box-shadow:0 1px 0 #25374c}
.proposal-browse{font-size:14px;text-decoration:underline;text-underline-offset:6px;padding:12px 0}
.proposal-note{font-size:12px;color:#5a6a7c;margin:24px 0 0}
.proposal-cover{position:relative;min-width:0}
.proposal-cover img{display:block;width:100%;height:auto;max-height:435px;object-fit:contain}
.cover-caption{display:block;text-align:center;font-size:12px;color:#52637a}
.proposal-worlds{padding-top:24px;scroll-margin-top:25px}
.worlds-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 23px}
.worlds-heading h2{font-size:25px;margin:0}
.worlds-note{font-size:12px;color:#52637a}
[data-design] .portal-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;max-width:none;margin:0}
[data-design] .portal{padding:20px 21px 24px;border:2px solid #25374c;border-radius:25px;background:var(--world-light);position:relative;min-width:0;min-height:285px;overflow:visible;box-shadow:0 5px 0 #25374c;transition:transform .15s}
[data-design] .portal:hover{transform:translateY(-4px);box-shadow:0 9px 0 #25374c}
[data-design] .portal-art{height:112px;width:100%;margin:0 0 14px;padding:0;display:flex;align-items:center;justify-content:center}
[data-design] .portal-art svg{width:165px;max-width:100%;height:138px;transform:none}
[data-design] .portal-copy{padding:0;position:static}
[data-design] .portal-copy h2{font-size:25px;margin:0 0 11px;line-height:1.25;padding-right:0}
[data-design] .portal-copy p{font-size:12px;line-height:1.7;min-height:40px;margin:0;max-width:190px;color:#45566c}
[data-design] .portal-count{position:absolute;top:19px;right:18px;background:#fff;border-radius:9px;border:1px solid #25374c;color:#25374c;font-size:11px;padding:5px 7px;min-width:32px;box-shadow:none}
[data-design] .portal-open{display:inline-flex;align-items:center;font-size:12px;font-weight:750;background:none;color:#25374c;padding:0;margin-top:19px;box-shadow:none;border:0;border-radius:0;min-height:30px}
.portal-arrow{position:absolute;right:18px;bottom:19px;display:grid;place-items:center;width:34px;height:34px;background:#fff;border:1.5px solid #25374c;border-radius:50%;font-size:20px}
.proposal-reassurance{display:flex;gap:35px;justify-content:center;margin-top:42px;font-size:12px;color:#58677b}
.proposal-reassurance span:before{content:'✓';color:#167b68;margin-right:7px;font-weight:bold}
[data-design] footer{padding:26px 0;border-color:#cfd9e4;font-size:12px;gap:20px;flex-wrap:wrap}
[data-design] footer .powered-by{flex-basis:100%;display:flex;align-items:center;justify-content:center;gap:5px;margin:2px 0 0;padding-top:10px;border-top:1px solid #d5e0e5;font-size:12px;color:#52637a}
[data-design] footer .powered-by a{display:inline-flex;align-items:center;min-height:44px;font-weight:700;color:#294fc7;text-decoration:underline;text-underline-offset:3px}
[data-design] footer .wordmark{font-size:22px}
[data-design] footer .brand-number{font-size:29px}
/* Category and player pages inherit the chosen visual system, not the game simulation. */
[data-design] #mouse-hero,[data-design] #math-hero,[data-design] #science-hero{min-height:245px;padding:24px 0 36px;display:flex;align-items:center;text-align:left;gap:40px}
[data-design] .hero-mini,[data-design] .math-hero-art,[data-design] .science-hero-art,[data-design] #mouse-hero .hero-mark{display:none}
[data-design] #mouse-hero .hero-copy,[data-design] #math-hero>div:first-child,[data-design] #science-hero>div:first-child{flex:1;max-width:850px;margin:0}
[data-design] #mouse-hero h1,[data-design] #math-hero h1,[data-design] #science-hero h1{font-size:clamp(30px,3.1vw,44px);line-height:1.3;margin:0}
[data-design] .hero .lede,[data-design] .math-library-hero .lede,[data-design] .science-hero p{font-size:15px;line-height:1.8;margin:14px 0 20px;color:#52637a;max-width:620px}
[data-design] .hero-actions{justify-content:flex-start}
[data-design] .math-library-hero .hero-actions .text-link{display:none}
[data-design] .hero-note{margin:18px 0 0}
.library-sticker{width:160px;flex:0 0 160px}
.library-sticker svg{width:100%;height:auto}
[data-design] .collection{padding-top:27px;border-top:1px solid #d4deea}
[data-design] .section-head h2{font-size:29px;line-height:1.35}
[data-design] .search{border:1.5px solid #bdcddb;background:white;border-radius:15px;min-height:46px}
[data-design] .filters{align-items:start}
[data-design] .filters .pill{font-size:12px;padding:10px 13px}
[data-design] .thumb{border-radius:19px;border:1px solid #d1dce4;background:#f6faff;box-shadow:none}
[data-design] .favorite-toggle{background:#fff;border-color:#c1ccdb;color:#3b526a;min-width:38px;min-height:38px}
[data-design] .card-head h3{font-size:21px;line-height:1.35}
[data-design] .game-card p{font-size:12px;line-height:1.7;color:#52637a}
[data-design] .player{padding-top:20px}
[data-design] .player-header h1{font-size:clamp(29px,4vw,46px);line-height:1.25}
[data-design] .game-panel{background:white;border:1.5px solid #ccdae3;border-radius:23px;box-shadow:none}
[data-design] .game-description{font-family:inherit;font-size:22px;line-height:1.5}
[data-design] #stage{border:2px solid #cbd8e3;border-radius:23px;box-shadow:0 5px 0 #d9e4ec;overflow:hidden}
[data-design] .support{background:#fff1d5;border:1.5px solid #e3ce9d;border-radius:24px;box-shadow:none}
[data-design] .support h2,[data-design] .about h2,[data-design] .thanks h2,[data-design] .favorites h2,[data-design] .faq h2{font-size:34px;line-height:1.3}
[data-design] .support form{border:1px solid #e7d9bd;box-shadow:none}
/* B: airy illustrated destinations with a panoramic orbital cover. */
[data-design=curious-planets]{--page:#eff6ff;--brown:#4c56c9}
[data-design=curious-planets] .brand-number{color:#5a52b4}
[data-design=curious-planets] .nav nav a{background:white;padding:10px 17px;border-radius:999px;border:1px solid #d6e1ef}
[data-design=curious-planets] .nav nav{gap:8px}
[data-design=curious-planets] .nav nav a[data-i18n="about"],[data-design=curious-planets] .nav nav a[data-i18n="support"]{background:none;border-color:transparent;padding:10px 5px;font-size:12px}
[data-design=curious-planets] .proposal-hero{display:flex;flex-direction:column;gap:0;min-height:0;text-align:center;padding-top:12px}
[data-design=curious-planets] .proposal-hero h1{font-size:clamp(42px,4.7vw,62px)}
[data-design=curious-planets] .proposal-intro{max-width:none;margin:14px 0 19px}
[data-design=curious-planets] .proposal-actions{justify-content:center}
[data-design=curious-planets] .proposal-note{margin-top:19px}
[data-design=curious-planets] .proposal-pick{background:#7365c9;color:white;border:0;border-radius:999px;box-shadow:0 4px 0 #514393;padding:15px 31px}
[data-design=curious-planets] .proposal-cover{width:700px;max-width:100%;margin-top:0;height:298px}
[data-design=curious-planets] .proposal-cover img{height:100%;object-fit:contain}
[data-design=curious-planets] .portal-grid{grid-template-columns:1fr 1fr;gap:20px}
[data-design=curious-planets] .portal{border:0;min-height:165px;padding:24px 28px;display:flex;align-items:center;gap:20px;border-radius:28px;background:#fff;box-shadow:0 5px 0 #d6e3f1}
[data-design=curious-planets] .portal:hover{box-shadow:0 9px 0 #d6e3f1}
[data-design=curious-planets] .portal-art{flex:0 0 128px;height:120px;width:128px;background:var(--world-light);border-radius:50%;margin:0}
[data-design=curious-planets] .portal-art svg{width:135px;height:125px}
[data-design=curious-planets] .portal-copy h2{font-size:26px}
[data-design=curious-planets] .portal-copy p{min-height:0;max-width:260px}
[data-design=curious-planets] .portal-count{border:0;background:var(--world-light);color:#32455f;top:20px;right:21px}
[data-design=curious-planets] .portal-arrow{background:var(--world-light);border:0;color:#25374c}
[data-design=curious-planets] .portal-open{margin-top:15px}
[data-design=curious-planets] .pill{border-radius:999px}
[data-design=curious-planets] #stage,[data-design=curious-planets] .game-panel{border-radius:28px}
/* C: a tidy notebook/workbench with four clear chapter rows. */
[data-design=rainbow-lab]{--page:#f8fcfa;--ink:#213a40;--muted:#4b666d}
[data-design=rainbow-lab] .brand-number{color:#237ba1;border-bottom:5px solid #ffc947;line-height:1.05}
[data-design=rainbow-lab] .nav{border-bottom:2px solid #d0dedc}
[data-design=rainbow-lab] .proposal-hero{gap:38px;padding:18px 0 22px;min-height:390px}
[data-design=rainbow-lab] .proposal-hero h1{font-size:clamp(41px,4.2vw,58px)}
[data-design=rainbow-lab] .proposal-cover{border:1.5px solid #b9cfcd;border-radius:8px;background:#fff;box-shadow:9px 9px 0 #e0eeea}
[data-design=rainbow-lab] .cover-caption{padding:0 0 13px}
[data-design=rainbow-lab] .proposal-pick{background:#1d747a;color:white;border:0;border-radius:10px;box-shadow:0 3px 0 #145258}
[data-design=rainbow-lab] .proposal-worlds{padding-top:35px}
[data-design=rainbow-lab] .portal-grid{grid-template-columns:1fr;gap:12px}
[data-design=rainbow-lab] .portal{display:flex;align-items:center;gap:23px;min-height:112px;background:white;border:1px solid #baced0;border-left:8px solid var(--world-color);padding:14px 27px 14px 17px;border-radius:12px;box-shadow:none}
[data-design=rainbow-lab] .portal:hover{box-shadow:0 4px 0 #dbe8e6;transform:translateY(-2px)}
[data-design=rainbow-lab] .portal-art{width:82px;height:82px;flex:0 0 82px;margin:0;background:var(--world-light);border-radius:14px}
[data-design=rainbow-lab] .portal-art svg{height:83px;width:95px}
[data-design=rainbow-lab] .portal-copy{display:grid;grid-template-columns:190px 1fr;align-items:center;gap:6px 25px;flex:1;padding-right:95px}
[data-design=rainbow-lab] .portal-copy h2{font-size:25px;margin:0}
[data-design=rainbow-lab] .portal-copy p{font-size:14px;max-width:380px;min-height:0;margin:0}
[data-design=rainbow-lab] .portal-open{display:none}
[data-design=rainbow-lab] .portal-count{top:50%;transform:translateY(-50%);right:76px;border:0;border-radius:8px;background:var(--world-light);font-size:13px;padding:7px 10px}
[data-design=rainbow-lab] .portal-arrow{top:50%;transform:translateY(-50%);bottom:auto;right:24px;border-radius:10px;border-color:#c3d4d0}
[data-design=rainbow-lab] .pill{border-radius:10px}
[data-design=rainbow-lab] .game-panel,[data-design=rainbow-lab] #stage,[data-design=rainbow-lab] .thumb{border-radius:13px}
/* Comparison landing page, separate from the four-world game home. */
.design-overview{margin:0;background:#f6f9fe;color:#24364e;font-family:"Trebuchet MS","Microsoft YaHei",sans-serif}
.design-overview *{box-sizing:border-box}
.design-overview a{color:inherit;text-decoration:none}
.design-overview .overview-wrap{max-width:1230px;width:calc(100% - 60px);margin:auto}
.overview-header{display:flex;justify-content:space-between;align-items:center;padding:30px 0;font-weight:700}
.overview-header a{font-size:14px;text-decoration:underline;text-underline-offset:5px}
.overview-brand{font-size:26px;letter-spacing:-1px}
.overview-intro{margin:22px 0 34px;max-width:750px}
.overview-intro h1{font-size:40px;margin:0 0 14px;line-height:1.3}
.overview-intro p{font-size:16px;color:#56677c;line-height:1.8;margin:0}
.overview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.overview-card{background:white;border:1.5px solid #d5dfec;border-radius:24px;overflow:hidden;display:flex;flex-direction:column}
.overview-art{background:var(--sample-bg);padding:15px;height:235px;display:flex;align-items:center}
.overview-art img{width:100%;height:100%;object-fit:contain}
.overview-card-copy{padding:25px;flex:1;display:flex;flex-direction:column}
.overview-card h2{font-size:25px;margin:0 0 13px;line-height:1.4}
.overview-card p{font-size:14px;line-height:1.8;margin:0 0 24px;color:#52637a;flex:1}
.overview-colours{display:flex;gap:7px;margin-bottom:23px}
.overview-colours span{width:20px;height:20px;background:var(--swatch);border-radius:50%}
.overview-card a{background:#294fc7;color:white;border-radius:12px;text-align:center;padding:14px 18px;font-weight:700;min-height:48px;font-size:14px}
.overview-card a:hover{background:#193bab}
.overview-footer{font-size:13px;color:#596c80;margin:30px 0 35px;line-height:1.8}
.design-overview a:focus-visible{outline:3px solid #254bc6;outline-offset:4px}
@media(max-width:1050px){
 [data-design] .wrap{width:calc(100% - 48px)}
 [data-design] .nav nav{gap:15px}
 [data-design] .nav nav a[data-i18n="about"],[data-design] .nav nav a[data-i18n="support"]{display:none}
 .design-switcher-inner{padding:9px 24px;gap:15px}
 [data-design] .portal-grid{grid-template-columns:1fr 1fr}
 [data-design] .portal{min-height:260px}
 [data-design=curious-planets] .portal{min-height:166px;padding:23px 19px;gap:13px}
 [data-design=curious-planets] .portal-art{width:100px;flex-basis:100px;height:100px}
 [data-design=curious-planets] .portal-copy h2{font-size:23px}
 [data-design=rainbow-lab] .portal-grid{grid-template-columns:1fr}
 [data-design=rainbow-lab] .portal{min-height:112px}
 [data-design=rainbow-lab] .portal-copy{grid-template-columns:155px 1fr;gap:12px}
 [data-design=rainbow-lab] .portal-copy h2{font-size:22px}
 .overview-grid{gap:16px}.overview-card-copy{padding:20px}.overview-card h2{font-size:22px}
}
@media(max-width:700px){
 .design-switcher-inner{padding:8px 16px;gap:7px;flex-wrap:wrap}
 .design-overview-link{font-size:11px}.design-preview-note{display:none}.design-switcher nav{gap:0;justify-content:flex-end}
 .design-switcher nav a{padding:9px 7px;font-size:10px;min-height:44px}
 [data-design] .wrap{width:calc(100% - 36px)}
 [data-design] .nav{height:auto;min-height:75px;flex-wrap:wrap;gap:8px 18px;padding:14px 0 10px}
 [data-design] .nav .wordmark{font-size:23px}.brand-number{font-size:32px!important}
 [data-design] .nav nav{display:flex;order:3;flex-basis:100%;justify-content:space-between;gap:6px;padding:11px 0 0}
 [data-design] .nav nav a{font-size:13px;padding:7px 10px;min-height:44px}
 [data-design] .nav #language{margin-left:auto;font-size:11px;padding:9px 13px;min-height:44px}
 [data-design] .hub{padding:22px 0 34px}
 .proposal-hero{grid-template-columns:1fr;gap:22px;min-height:0}
 .proposal-hero h1{font-size:38px;line-height:1.3}
 .proposal-intro{font-size:14px;margin:15px 0 20px;max-width:300px}
 .proposal-actions{gap:17px}.proposal-pick{font-size:14px;min-height:49px;padding:12px 22px}.proposal-browse{font-size:12px}
 .proposal-note{font-size:11px;margin-top:20px}.proposal-cover{max-width:390px;margin:auto;width:100%}
 .proposal-cover img{max-height:245px}.proposal-worlds{padding-top:19px}
 .worlds-heading{align-items:start;gap:10px;margin-bottom:20px}.worlds-heading h2{font-size:21px}.worlds-note{font-size:10px;max-width:115px;line-height:1.6;text-align:right}
 [data-design] .portal-grid{gap:15px 12px}
 [data-design] .portal{min-height:244px;padding:17px 15px 20px;border-radius:21px}
 [data-design] .portal-art{height:95px;margin-bottom:12px}.portal-art svg{height:115px!important;width:130px!important}
 [data-design] .portal-copy h2{font-size:21px;line-height:1.3}
 [data-design] .portal-copy p{font-size:11px;min-height:50px;line-height:1.7}
 [data-design] .portal-count{top:13px;right:12px;font-size:10px;padding:4px 6px;min-width:29px}
 [data-design] .portal-open{font-size:11px;margin-top:12px}.portal-arrow{width:28px;height:28px;font-size:17px;right:12px;bottom:16px}
 .proposal-reassurance{gap:10px 19px;flex-wrap:wrap;justify-content:flex-start;font-size:10px;margin-top:30px}
 [data-design] #mouse-hero,[data-design] #math-hero,[data-design] #science-hero{min-height:190px;padding:24px 0 30px;gap:12px}
 [data-design] #mouse-hero h1,[data-design] #math-hero h1,[data-design] #science-hero h1{font-size:28px;max-width:300px}
 [data-design] .hero .lede,[data-design] .math-library-hero .lede,[data-design] .science-hero p{font-size:13px}
 .library-sticker{width:78px;flex-basis:78px;display:none}
 [data-design] .section-head h2{font-size:23px}.game-grid{gap:22px 13px}
 [data-design] .card-head h3{font-size:19px}
 [data-design] .player-header h1{font-size:30px}[data-design] .game-panel{padding:18px}
 [data-design] .support h2,[data-design] .about h2,[data-design] .thanks h2,[data-design] .favorites h2,[data-design] .faq h2{font-size:27px}
 [data-design] footer{padding:23px 0;gap:14px}
 [data-design=curious-planets] .proposal-hero{padding-top:4px;text-align:center}
 [data-design=curious-planets] .proposal-hero h1{font-size:37px}
 [data-design=curious-planets] .proposal-intro{font-size:13px;margin:14px auto 18px}
 [data-design=curious-planets] .proposal-cover{height:220px;margin-top:5px}
 [data-design=curious-planets] .portal-grid{grid-template-columns:1fr;gap:14px}
 [data-design=curious-planets] .portal{min-height:148px;padding:19px 18px;gap:18px}
 [data-design=curious-planets] .portal-art{flex-basis:100px;width:100px;height:100px;border-radius:50%;margin:0}
 [data-design=curious-planets] .portal-copy h2{font-size:23px}
 [data-design=curious-planets] .portal-copy p{font-size:11px;max-width:165px;min-height:0}
 [data-design=curious-planets] .portal-count{top:12px;right:13px}
 [data-design=rainbow-lab] .proposal-hero{gap:28px;padding:5px 0 12px}
 [data-design=rainbow-lab] .proposal-hero h1{font-size:38px}
 [data-design=rainbow-lab] .proposal-cover img{max-height:250px}
 [data-design=rainbow-lab] .portal-grid{grid-template-columns:1fr;gap:11px}
 [data-design=rainbow-lab] .portal{min-height:116px;padding:14px 48px 14px 12px;gap:13px;border-radius:12px}
 [data-design=rainbow-lab] .portal-art{flex-basis:62px;width:62px;height:66px;border-radius:10px;margin:0}
 [data-design=rainbow-lab] .portal-art svg{height:66px!important;width:76px!important}
 [data-design=rainbow-lab] .portal-copy{display:block;padding-right:0}
 [data-design=rainbow-lab] .portal-copy h2{font-size:20px;margin-bottom:8px;padding-right:30px}
 [data-design=rainbow-lab] .portal-copy p{font-size:11px;min-height:0;line-height:1.7}
 [data-design=rainbow-lab] .portal-count{position:static;display:inline-block;float:right;transform:none;padding:3px 5px;font-size:10px;min-width:25px}
 [data-design=rainbow-lab] .portal-arrow{right:12px;width:26px;height:26px;border-radius:8px}
 .design-overview .overview-wrap{width:calc(100% - 36px)}.overview-header{padding:22px 0}.overview-brand{font-size:22px}
 .overview-intro{margin:13px 0 25px}.overview-intro h1{font-size:29px}.overview-intro p{font-size:14px}
 .overview-grid{grid-template-columns:1fr;gap:23px}.overview-art{height:230px}.overview-card-copy{padding:23px}
}
@media(prefers-reduced-motion:reduce){[data-design] *{animation:none!important;transition:none!important}[data-design] .portal:hover,.proposal-pick:hover{transform:none}}

/* Locally hosted rounded faces; Chinese UI glyph coverage and readable UI scale. */
@font-face{font-family:"Games Chill Round";src:url("assets/fonts/chill-round.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:"Games Fredoka";src:url("assets/fonts/fredoka.woff2") format("woff2");font-style:normal;font-weight:300 700;font-stretch:75% 125%;font-display:swap}
:root[data-design=color-blocks]{--rounded-font:"Games Fredoka","Games Chill Round","Microsoft YaHei",sans-serif;font-family:var(--rounded-font);font-size:17px;line-height:1.65}
[data-design=color-blocks] :is(h1,h2,h3,.wordmark,button,input,select,summary){font-family:var(--rounded-font)}
[data-design=color-blocks] :is(h1,h2,h3){letter-spacing:0;font-weight:600}
[data-design=color-blocks] .wordmark{font-size:30px;letter-spacing:0}
[data-design=color-blocks] .brand-number{font-size:44px;letter-spacing:-1px;font-weight:600}
[data-design=color-blocks] .nav nav a{font-size:18px}
[data-design=color-blocks] .pill{font-size:17px;line-height:1.45}
[data-design=color-blocks] .proposal-hero h1{font-size:clamp(46px,4.8vw,68px);line-height:1.35}
[data-design=color-blocks] .proposal-intro{font-size:20px;line-height:1.8;max-width:470px}
[data-design=color-blocks] .proposal-pick{font-size:19px;font-weight:500}
[data-design=color-blocks] .proposal-browse{font-size:17px}
[data-design=color-blocks] :is(.proposal-note,.worlds-note,.proposal-reassurance){font-size:16px;line-height:1.75}
[data-design=color-blocks] .worlds-heading h2{font-size:30px}
[data-design=color-blocks] .portal{padding-bottom:27px}
[data-design=color-blocks] .portal-copy h2{font-size:28px;line-height:1.5}
[data-design=color-blocks] .portal-copy p{font-size:17px;line-height:1.8;max-width:none;min-height:62px}
[data-design=color-blocks] .portal-count{font-size:15px;font-weight:500;min-width:39px}
[data-design=color-blocks] .portal-open{font-size:17px;font-weight:500;min-height:40px}
[data-design=color-blocks] .portal-arrow{width:38px;height:38px}
[data-design=color-blocks] footer{font-size:16px;line-height:1.7}
[data-design=color-blocks] footer .powered-by{font-size:16px;flex-wrap:wrap}
[data-design=color-blocks] footer .wordmark{font-size:26px}
[data-design=color-blocks] footer .brand-number{font-size:34px}
[data-design=color-blocks] .quiet{font-size:16px;line-height:1.8}
[data-design=color-blocks] .text-link{font-size:16px}
[data-design=color-blocks] .eyebrow{font-size:14px}
[data-design=color-blocks] .control-label{font-size:16px;line-height:1.7}
[data-design=color-blocks] .result{font-size:17px;line-height:1.8}
[data-design=color-blocks] :is(.hero .lede,.math-library-hero .lede,.science-hero p){font-size:18px;line-height:1.8}
[data-design=color-blocks] .filters .pill{font-size:16px}
[data-design=color-blocks] .search input{font-size:17px}
[data-design=color-blocks] .card-head h3{font-size:24px;line-height:1.55}
[data-design=color-blocks] .card-head span{font-size:15px}
[data-design=color-blocks] .game-card p{font-size:17px;line-height:1.8}
[data-design=color-blocks] :is(.thumb-levels,.thumb-no,.count-chip,.stage-caption,#motion-note){font-size:14px}
[data-design=color-blocks] .player-actions .pill{font-size:17px;min-height:48px}
[data-design=color-blocks] .game-description{font-family:var(--rounded-font);font-size:25px;line-height:1.65}
[data-design=color-blocks] #instructions{font-size:18px;line-height:1.85}
[data-design=color-blocks] :is(.lab-hint,.lab-live,.lab-principle,.science-principle,.discovery-target){font-size:18px;line-height:1.85}
[data-design=color-blocks] :is(.control-row,.lab-tools,.lab-stages) .pill{font-size:17px;min-height:46px}
[data-design=color-blocks] :is(.faq details,.support label,.support p,.support details){font-size:17px;line-height:1.8}
@media(max-width:1050px){[data-design=color-blocks] .nav nav{gap:13px}[data-design=color-blocks] .nav nav a{font-size:17px}}
@media(max-width:700px){
 [data-design=color-blocks] .nav .wordmark{font-size:27px}
 [data-design=color-blocks] .nav .brand-number{font-size:38px!important}
 [data-design=color-blocks] .nav nav a{font-size:17px;padding:8px;min-height:46px}
 [data-design=color-blocks] .nav #language{font-size:15px}
 [data-design=color-blocks] .proposal-hero h1{font-size:40px;line-height:1.4}
 [data-design=color-blocks] .proposal-intro{font-size:18px;max-width:none}
 [data-design=color-blocks] .proposal-actions{gap:16px}
 [data-design=color-blocks] .proposal-pick{font-size:18px}
 [data-design=color-blocks] .proposal-browse{font-size:16px}
 [data-design=color-blocks] :is(.proposal-note,.worlds-note,.proposal-reassurance){font-size:15px}
 [data-design=color-blocks] .worlds-heading{flex-direction:column;gap:8px}
 [data-design=color-blocks] .worlds-heading h2{font-size:27px}
 [data-design=color-blocks] .worlds-note{max-width:none;text-align:left}
 [data-design=color-blocks] .portal-copy h2{font-size:23px;line-height:1.5}
 [data-design=color-blocks] .portal-copy p{font-size:16px;min-height:75px}
 [data-design=color-blocks] .portal-open{font-size:16px;margin-top:15px}
 [data-design=color-blocks] .portal-count{font-size:14px;min-width:34px}
 [data-design=color-blocks] .portal-arrow{width:30px;height:30px;bottom:25px}
 [data-design=color-blocks] .proposal-reassurance{gap:14px}
 [data-design=color-blocks] :is(.hero .lede,.math-library-hero .lede,.science-hero p){font-size:17px}
 [data-design=color-blocks] .section-head h2{font-size:26px}
 [data-design=color-blocks] .card-head h3{font-size:22px}
 [data-design=color-blocks] .game-card p{font-size:16px}
 [data-design=color-blocks] .game-description{font-size:24px}
 [data-design=color-blocks] footer{font-size:15px}
 [data-design=color-blocks] footer>span{font-size:14px}
 [data-design=color-blocks] footer .powered-by{font-size:15px;gap:5px}
}
@media(max-width:380px){
 [data-design=color-blocks] .portal-grid{grid-template-columns:1fr}
 [data-design=color-blocks] .portal{display:flex;align-items:center;gap:13px;min-height:196px;padding:23px 20px 24px 15px}
 [data-design=color-blocks] .portal-art{width:82px;flex:0 0 82px;height:88px;margin:0}
 [data-design=color-blocks] .portal-art svg{width:90px!important;height:88px!important}
 [data-design=color-blocks] .portal-copy{min-width:0}
 [data-design=color-blocks] .portal-copy h2{font-size:24px;line-height:1.45}
 [data-design=color-blocks] .portal-copy p{min-height:0;font-size:16px}
 [data-design=color-blocks] .portal-open{font-size:16px;margin-top:12px}
 [data-design=color-blocks] .portal-count{top:12px;left:14px;right:auto}
 [data-design=color-blocks] .portal-arrow{display:none}
}

/* A warm, one-time thank-you that stays separate from game access. */
[data-design] .support-kindness{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:54px;padding:44px 48px;background:#fff0de;border:1.5px solid #e1cbb2;border-radius:24px;scroll-margin-top:24px;overflow:visible}
[data-design] .support-kindness .support-copy{padding:0;min-width:0}
[data-design] .support-kindness h2{font-size:40px;line-height:1.4;white-space:pre-line;margin:0 0 14px;letter-spacing:0}
[data-design] .support-kindness .support-story{font-size:18px;line-height:1.8;color:#526078;margin:0;max-width:34ch}
[data-design] .support-illustration{display:block;width:100%;max-width:410px;height:auto;aspect-ratio:3/2;object-fit:contain;margin:14px auto 10px}
[data-design] .support-kindness .support-free{font-size:16px;color:#526078;line-height:1.8;margin:12px 0 8px}
[data-design] .support-play{font-size:16px;color:#24364e;text-decoration:underline;text-underline-offset:5px;display:inline-flex;align-items:center;min-height:44px}
[data-design] .support-kindness form{min-width:0;padding:0 0 0 38px;margin:0;border:0;border-left:1px solid #dfc5a6;border-radius:0;background:transparent;box-shadow:none}
[data-design] .support-kindness h3{font-size:26px;font-weight:600;line-height:1.4;letter-spacing:0;margin:0 0 8px}
[data-design] .support-kindness .support-form-intro{font-size:16px;line-height:1.7;color:#526078;margin:0 0 20px}
[data-design] .support-kindness .amounts{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px;margin:0 0 22px}
[data-design] .support-kindness .amounts .pill{min-height:58px;padding:12px 7px;border:1.5px solid #c1c9d6;border-radius:14px;background:#fffdf9;color:#24364e;font-size:20px;font-weight:500;box-shadow:0 2px 3px #24364e0a}
[data-design] .support-kindness .amounts .pill.selected{color:#fff;background:#3155c5;border-color:#3155c5;box-shadow:0 3px 6px #2749aa25}
[data-design] .support-kindness .amounts .pill:hover:not(.selected){border-color:#3155c5;background:#f1f4ff}
[data-design] .support-kindness label{font-size:16px;color:#24364e;line-height:1.65}
[data-design] .support-money-field{display:flex;align-items:center;gap:12px;min-height:58px;margin-top:8px;padding:0 15px;background:#fffdf9;border:1.5px solid #b4becd;border-radius:14px;color:#526078}
[data-design] .support-money-field>span{font-size:20px;font-weight:500}
[data-design] .support-kindness .support-money-field input{margin:0;min-width:0;min-height:54px;padding:10px 0;border:0;border-radius:0;background:transparent;font-size:22px;line-height:1.4;color:#24364e;outline:0;caret-color:#3155c5}
[data-design] .support-money-field:focus-within{outline:3px solid #3155c5;outline-offset:3px}
[data-design] .support-money-field:has([aria-invalid=true]){border-color:#a12c20}
[data-design] .support-kindness #amount-hint{font-size:14px;line-height:1.7;color:#526078;margin:8px 0 13px}
[data-design] .support-kindness details{border-bottom:1px solid #dfc5a6;padding:14px 0}
[data-design] .support-kindness summary{font-size:16px;line-height:1.65;color:#24364e;min-height:30px;cursor:pointer}
[data-design] .support-kindness details p{font-size:15px;color:#526078;line-height:1.8}
[data-design] .support-kindness .identity{gap:20px;margin:18px 0 10px;flex-wrap:wrap}
[data-design] .support-kindness .identity legend{font-size:15px;color:#526078;margin-bottom:10px}
[data-design] .support-kindness .identity label{min-height:44px;align-items:center;gap:9px}
[data-design] .support-kindness input:is([type=checkbox],[type=radio]){width:20px;height:20px;accent-color:#3155c5}
[data-design] .support-kindness .join{gap:10px;line-height:1.65;margin:14px 0 4px;min-height:44px;align-items:center}
[data-design] .support-kindness #nickname{font-size:17px;border-color:#b4becd;border-radius:12px;min-height:48px;background:#fffdf9}
[data-design] .support-total{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:20px 0 13px;color:#24364e;font-size:16px}
[data-design] .support-total strong{font-size:26px;line-height:1.4;font-weight:500;font-variant-numeric:tabular-nums}
[data-design] .support-kindness #checkout{width:100%;min-height:58px;font-size:18px;font-weight:500;color:#24364e;background:#ffcd4e;border:2px solid #24364e;border-radius:15px;box-shadow:0 3px 5px #24364e22}
[data-design] .support-kindness #checkout:hover:not(:disabled){background:#ffdb7a;box-shadow:0 5px 10px #24364e26}
[data-design] .support-kindness #checkout:disabled{color:#526078;background:#e9edf2;border-color:#b8c2d0;opacity:1;box-shadow:none;cursor:not-allowed}
[data-design] .support-kindness .support-once{display:flex;justify-content:center;align-items:center;gap:7px;font-size:14px;line-height:1.7;color:#526078;margin:12px 0}
[data-design] .support-once svg{flex-shrink:0}
[data-design] .support-kindness #payment-note{font-size:15px;line-height:1.75;color:#526078;margin:12px 0 2px}
[data-design] .support-kindness #operator-note:empty{display:none}
[data-design] .support-kindness .error{font-size:16px;color:#a12c20}
[data-design] .support-kindness :is(button,a,input,summary):focus-visible{outline:3px solid #3155c5;outline-offset:4px}
[data-design] .support-kindness ::selection{background:#c7e7dc;color:#24364e}
[data-design] .support-thanks .section-head{align-items:center;gap:16px}
[data-design] .support-thanks h2{font-size:30px;line-height:1.5;letter-spacing:0}
[data-design] .support-thanks .count-chip{font-size:14px;color:#526078;background:#fff0de;border-color:#e1cbb2}
[data-design] .support-thanks .board-empty{font-size:17px;line-height:1.85;color:#526078;padding:24px;border:1px dashed #dac8b3;border-radius:16px;background:#fffdf9;text-align:left}
[data-design] .support-thanks .board-row{font-size:17px;line-height:1.7;align-items:center;grid-template-columns:28px 1fr auto;gap:12px}
[data-design] .support-thanks-heart{color:#c75555!important;display:flex;align-items:center}
[data-design] .support-thanks #board-note{font-size:15px;line-height:1.8;color:#526078}
@media(max-width:1000px){
 [data-design] .support-kindness{gap:30px;padding:32px}
 [data-design] .support-kindness form{padding-left:28px}
 [data-design] .support-kindness h2{font-size:34px}
 [data-design] .support-kindness .amounts{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:700px){
 [data-design] .support-kindness{grid-template-columns:1fr;padding:24px 22px;gap:25px;margin-top:24px;margin-bottom:38px;border-radius:22px}
 [data-design] .support-kindness .support-copy{display:flex;flex-direction:column;align-items:center;text-align:center}
 [data-design] .support-illustration{order:-1;max-width:260px;margin:0 0 16px}
 [data-design] .support-kindness h2{font-size:30px;margin-bottom:12px}
 [data-design] .support-kindness .support-story{font-size:17px;max-width:30ch}
 [data-design] .support-kindness .support-free{font-size:15px;margin:12px 0 3px}
 [data-design] .support-kindness form{padding:24px 0 0;border-left:0;border-top:1px solid #dfc5a6}
 [data-design] .support-kindness h3{font-size:25px}
 [data-design] .support-kindness .amounts .pill{font-size:21px;min-height:57px}
 [data-design] .support-total strong{font-size:25px}
 [data-design] .support-kindness #checkout{font-size:17px}
 [data-design] .support-kindness .support-once{align-items:flex-start;text-align:center;font-size:14px}
 [data-design] .support-thanks .section-head{flex-direction:column;align-items:flex-start;gap:8px}
 [data-design] .support-thanks h2{font-size:26px}
 [data-design] .support-thanks .board-empty{font-size:16px;padding:20px}
}

@media(max-width:700px){[data-design] .nav nav{flex-wrap:wrap;justify-content:center;gap:8px 14px;}[data-design] .nav nav a{white-space:nowrap;}[data-design] .portal-casual{grid-column:1/-1;}}