@charset "UTF-8";
:root{--paper:#faf9f6;--surface:#fff;--ink:#222a30;--muted:#66716f;--border:#e3e5df;--accent:#b84d29;--accent-ink:#fff;--accent-soft:#fff2e9;--tile:#f1ece4;--mono:ui-monospace,SFMono-Regular,Consolas,monospace;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;color:var(--ink);background:var(--paper)}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--paper:#15181b;--surface:#1e2226;--ink:#e8eae6;--muted:#9aa4a1;--border:#30363b;--accent:#e2774f;--accent-ink:#1a1310;--accent-soft:#2c211c;--tile:#272c31;color-scheme:dark}}
:root[data-theme="dark"]{--paper:#15181b;--surface:#1e2226;--ink:#e8eae6;--muted:#9aa4a1;--border:#30363b;--accent:#e2774f;--accent-ink:#1a1310;--accent-soft:#2c211c;--tile:#272c31;color-scheme:dark}
*{box-sizing:border-box}
/* Component display rules must never override the hidden attribute. */
[hidden]{display:none!important}
body{margin:0;line-height:1.65;background:var(--paper);color:var(--ink)}
button,input{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
button{cursor:pointer;border:0;background:none}
button:disabled{cursor:not-allowed;opacity:.42}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--surface);padding:8px 12px;border-radius:8px;z-index:10}
.skip-link:focus{left:16px}
.container{max-width:1080px;margin:0 auto;padding:0 32px}
.eyebrow{font:600 11px/1.4 var(--mono);letter-spacing:1.4px;color:var(--accent);margin:0 0 10px}

.site-header{border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:32px;padding-top:18px;padding-bottom:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.4px;white-space:nowrap}
.brand img{border-radius:9px}
.brand-light{font-weight:400;color:var(--muted)}
.site-header nav{margin-left:auto;display:flex;gap:24px;font-size:14px}
.site-header nav a{white-space:nowrap}
.site-header nav a[aria-current]{color:var(--accent);font-weight:700}

.hero{padding:72px 0 56px}
.hero h1{font-size:44px;line-height:1.2;letter-spacing:-1.6px;margin:0 0 16px}
.hero h1 span{color:var(--muted);font-weight:500}
.hero>p{color:var(--muted);margin:0}
.games{margin-bottom:56px}
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.game-card{display:block;padding:26px;border:1px solid var(--border);border-radius:16px;background:var(--surface);transition:transform .15s,border-color .15s}
a.game-card:hover{transform:translateY(-2px);border-color:var(--accent)}
.game-card.soon{opacity:.7}
.card-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:22px}
.icon-tile{position:relative;display:grid;place-items:center;width:62px;height:62px;padding-bottom:9px;border-radius:14px;background:var(--accent-soft);color:var(--accent)}
.icon-tile svg{width:34px;height:34px}
/* GreatJIN signature under every icon, same size and weight as GreatJIN Tools. */
.icon-watermark{position:absolute;bottom:6px;left:0;right:0;text-align:center;font:7px/1 var(--mono);letter-spacing:.2px;opacity:.66}
.icon-watermark b{font-weight:800}
.card-number{font:12px var(--mono);color:var(--muted)}
.game-card h3{font-size:22px;margin:0 0 6px;letter-spacing:-.6px}
.game-card p{margin:0;color:var(--muted);font-size:14px}
.badge{display:inline-block;vertical-align:middle;font-size:11px;font-weight:600;padding:2px 8px;border-radius:99px;background:var(--tile);color:var(--muted);letter-spacing:0}

.breadcrumb{display:flex;gap:8px;font-size:13px;color:var(--muted);padding-top:26px}
.breadcrumb a{text-decoration:underline;text-underline-offset:3px}
.game-heading{padding:28px 0 26px}
.game-heading h1{font-size:36px;margin:0 0 6px;letter-spacing:-1.2px}
.game-heading h1 span{color:var(--accent)}
.game-heading>p{margin:0;color:var(--muted)}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:26px;margin-bottom:40px}
.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.panel h2{font-size:19px;margin:0}

.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:42px;padding:8px 18px;border-radius:10px;font-weight:700;font-size:14px}
.primary-button{background:var(--accent);color:var(--accent-ink)}
.secondary-button{border:1px solid var(--border);background:var(--surface)}
.secondary-button:hover{border-color:var(--accent)}
.text-button{padding:8px 6px;font-size:14px;color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.check{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px;margin-top:20px;font-weight:600;font-size:14px}
.check input{width:18px;height:18px;accent-color:var(--accent)}
.check small{flex-basis:100%;padding-left:28px;font-weight:400;color:var(--muted)}
.actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px;flex-wrap:wrap}
.message{margin:16px 0 0;padding:10px 14px;border-radius:10px;background:var(--accent-soft);font-size:14px}

.guide{display:grid;grid-template-columns:260px 1fr;gap:48px;padding:24px 0 40px;border-top:1px solid var(--border)}
.guide h2,.faq h2{font-size:22px;margin:0;letter-spacing:-.6px}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:20px}
.steps li{display:flex;gap:18px}
.steps li>span{font:600 13px var(--mono);color:var(--accent);padding-top:3px}
.steps h3{margin:0 0 4px;font-size:16px}
.steps p{margin:0;color:var(--muted);font-size:14px}
.faq{padding:24px 0 64px;border-top:1px solid var(--border)}
.faq h2{margin-bottom:12px}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{display:flex;justify-content:space-between;gap:16px;padding:16px 0;font-weight:600;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq details[open] summary span{transform:rotate(45deg)}
.faq summary span{transition:transform .15s;color:var(--accent)}
.faq details p{margin:0 0 18px;color:var(--muted);font-size:14px}

.not-found{padding:96px 0;text-align:center}
.not-found h1{font-size:32px;margin:0 0 8px}
.not-found p{color:var(--muted);margin:0 0 28px}

.site-footer{border-top:1px solid var(--border);background:var(--surface)}
/* Footer layout and family switcher ported from GreatJIN Tools (src/navigation.css); colors use the mini tokens for dark mode. */
.footer-inner{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:20px 28px;align-items:center;padding-top:29px;padding-bottom:35px}
.footer-brand{font-size:13px;font-weight:600;letter-spacing:-.3px;color:var(--ink)}
.footer-inner p{margin:3px 0 0;font-size:11px;color:var(--muted)}
.footer-inner>nav{display:flex;flex-wrap:wrap;gap:22px;font-size:12px;color:var(--muted)}
.footer-inner>nav a:hover,.footer-inner>nav a[aria-current]{color:var(--accent)}
.copyright{grid-column:1/-1;padding-top:16px;border-top:1px solid var(--border);font:11px var(--mono);color:var(--muted)}
.site-version{display:inline-block;margin-left:12px;font:11px/1.5 var(--mono);color:var(--muted);white-space:nowrap}
.family-sites{position:relative;justify-self:end;min-width:0}
.family-sites-toggle{display:flex;align-items:center;gap:10px;min-height:44px;padding:10px 14px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--ink);font-size:12px;cursor:pointer;list-style:none;white-space:nowrap}
.family-sites-toggle::-webkit-details-marker{display:none}
.family-sites-toggle>svg{width:16px;height:16px;color:var(--muted)}
.family-sites-toggle:hover,.family-sites[open]>.family-sites-toggle{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.family-sites[open] .family-chevron{transform:rotate(180deg)}
.family-sites-panel{position:absolute;z-index:30;right:0;bottom:calc(100% + 12px);width:368px;max-width:calc(100vw - 40px);max-height:calc(100dvh - 110px);overflow:auto;padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 16px 48px #18201d1a}
.footer-inner .family-sites-eyebrow{margin:0;font:9px var(--mono);letter-spacing:1.5px;color:var(--accent)}
.footer-inner .family-sites-heading{margin:5px 0 14px;font-size:15px;font-weight:650;color:var(--ink)}
.family-sites-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.family-site-card{display:flex;align-items:flex-start;gap:12px;padding:14px 12px;border:1px solid var(--border);border-radius:12px;background:var(--paper);color:var(--ink)}
.family-site-card:hover{border-color:var(--accent);background:var(--accent-soft);color:var(--ink)}
.family-site-mark{display:grid;place-items:center;flex:0 0 38px;height:38px}
.family-site-mark img{display:block;width:38px;height:38px;object-fit:contain;border-radius:9px}
.family-site-copy{display:grid;gap:5px;min-width:0;flex:1}
.family-site-name{font-size:13px;font-weight:650;line-height:1.4}
.family-site-description{font-size:11px;line-height:1.65;color:var(--muted)}
.family-site-domain{font:9px/1.6 var(--mono);color:var(--muted);overflow-wrap:anywhere}
.family-site-external{display:grid;justify-items:end;gap:6px;flex-shrink:0;color:var(--muted);font-size:9px;white-space:nowrap}
.family-site-external>svg{width:14px;height:14px}
.footer-inner .family-sites-note{margin:12px 0 0;font-size:10px;color:var(--muted)}
@media(max-width:760px){
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:18px;padding-top:25px;padding-bottom:25px}
  .footer-inner>nav{width:100%;gap:12px 20px}
  .family-sites{width:100%;justify-self:stretch}
  .family-sites-toggle{width:100%;border-radius:10px}
  .family-sites-toggle>.family-chevron{margin-left:auto}
  .family-sites-panel{position:static;width:100%;max-width:none;max-height:none;margin-top:10px;box-shadow:none;padding:16px}
}

.prose{max-width:760px;padding:40px 0 64px}
.prose h1{font-size:34px;letter-spacing:-1.2px;margin:0 0 10px}
.prose h2{font-size:20px;margin:32px 0 8px}
.prose p,.prose li{color:var(--muted)}
.prose .lead{font-size:17px;color:var(--ink)}
.prose .updated{font-size:13px}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}
.info-panel{padding:22px;border:1px solid var(--border);border-radius:12px;background:var(--surface);margin:28px 0}
.info-panel h2:first-child{margin-top:0}
.info-list{padding-left:22px;line-height:1.9}

@media(max-width:720px){
  .container{padding:0 16px}
  .header-inner{gap:16px;flex-wrap:wrap;row-gap:10px}
  .hero{padding:44px 0 36px}
  .hero h1{font-size:31px;letter-spacing:-1.1px}
  .game-grid{grid-template-columns:1fr}
  .game-heading h1{font-size:28px}
  .panel{padding:18px 16px}
  .guide{grid-template-columns:1fr;gap:20px}
  .panel .actions .primary-button{flex:1}
  .prose{padding-top:28px}
  .prose h1{font-size:28px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}

/* Language switch, ported from GreatJIN Tools. */
.language-bar{max-width:1080px;margin:0 auto;padding:8px 32px;display:flex;justify-content:flex-end}
.language-switch{font-size:12px;border:1px solid var(--border);border-radius:6px;padding:6px 12px;display:inline-flex;align-items:center;gap:12px;min-height:36px;background:var(--surface)}
.language-switch:hover{border-color:var(--accent)}
html[lang="en"] .header-inner{flex-wrap:wrap;row-gap:10px}
@media(max-width:720px){.language-bar{padding:8px 16px}}

/* Controls shared by several games. */
.stepper{display:flex;align-items:center;gap:6px;font-weight:700}
.stepper button{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);font-size:20px;line-height:1}
.stepper output{min-width:28px;text-align:center;font-size:20px}
.stepper span{color:var(--muted);font-weight:500;margin-right:6px}
.play-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.play-toolbar p{margin:0;font-weight:600}
.toolbar-buttons{display:flex;gap:8px;flex-wrap:wrap}
.toolbar-buttons .secondary-button{min-height:38px;padding:6px 14px}
.seed{margin:18px 0 0;font-size:12px;color:var(--muted)}
.seed code{font-family:var(--mono)}
.segmented{display:flex;flex-wrap:wrap;gap:6px;padding:4px;border:1px solid var(--border);border-radius:12px;background:var(--paper)}
.segmented button{min-height:38px;padding:6px 14px;border-radius:9px;font-size:14px;font-weight:600;color:var(--muted)}
.segmented button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.segmented small{font-weight:400;margin-left:4px}

/* Mode notes, stat tiles and result panels shared by puzzle games. */
.board-actions{justify-content:center;margin-top:16px}
.mode-note{margin:12px 0 18px;font-size:13px;color:var(--muted)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:18px}
.stats div{padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--paper);min-width:0}
.stats span{display:block;font-size:12px;color:var(--muted)}
.stats strong{display:block;font:700 17px/1.4 var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.result{margin-top:22px;padding:18px 20px;border-radius:12px;background:var(--accent-soft);text-align:center}
.result h2{font-size:20px}
.result p{margin:6px 0 0}
.result .actions{justify-content:center;margin-top:14px}
.result .message{background:var(--surface)}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
@media(max-width:720px){
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats strong{font-size:15px;white-space:normal;overflow-wrap:anywhere}
}

/* Example cards under a game board. */
.reference{margin-bottom:40px}
.example-card{padding:22px 24px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}
.example-card h2{font-size:18px;margin:0 0 10px}
.example-card p{margin:6px 0 0;color:var(--muted);font-size:14px}
.example-card .example-line{font-size:18px;color:var(--ink)}

/* Home game groups (like the GreatJIN Tools tool groups). */
.games-title{display:flex;align-items:baseline;gap:8px;font-size:20px;margin:0 0 8px}
.games-title span{font:600 12px var(--mono);color:var(--accent)}
.game-group{margin:28px 0 8px}
.group-heading{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 14px;margin-bottom:14px}
.group-heading h2{font-size:17px;margin:0}
.group-heading p{margin:0;font-size:13px;color:var(--muted)}
.game-group .game-grid{margin-bottom:24px}

/* Mobile segmented controls: equal columns, details on a second line. Kept last so it overrides the base rule. */
@media(max-width:720px){
  .segmented{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr)}
  .segmented button{padding:6px 4px;line-height:1.3}
  .segmented small{display:block;margin-left:0}
}