/* play.ipe.rest — "Quiet Systems" (ipe.rest decision 0141): quiet, wide margins, one cobalt accent.
   Each game card is lightly tinted with its own color (--a light theme / --a2 dark and noir themes, set inline per card). */
@font-face{font-family:Inter;font-weight:400;font-style:normal;font-display:swap;src:url(/assets/fonts/inter-400.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-weight:400;font-style:normal;font-display:swap;src:url(/assets/fonts/jbmono-400.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-weight:600;font-style:normal;font-display:swap;src:url(/assets/fonts/jbmono-600.woff2) format("woff2")}
:root{
  --bg:#fbfcfe;--ink:#0f1b33;--muted:#5b6784;--line:#d7deec;--cobalt:#1f4fd8;--oncobalt:#fff;--tint:#f3f6fb;
  --font:Inter,system-ui,-apple-system,"Apple SD Gothic Neo","Noto Sans KR","Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1080px;--gutter:24px;--radius:14px;
  color-scheme:light;
}
:root[data-theme="dark"]{--bg:#0c1118;--ink:#e8edf8;--muted:#9aa6c4;--line:#26314d;--cobalt:#8fb0ff;--oncobalt:#0c1118;--tint:#111926;color-scheme:dark}
:root[data-theme="noir"]{--bg:#0a0810;--ink:#ece8f4;--muted:#a69eb9;--line:#2b2339;--cobalt:#b9a2f2;--oncobalt:#0a0810;--tint:#100c19;color-scheme:dark}
/* no data-theme (JS off): follow the device setting */
@media (prefers-color-scheme:dark){:root:not([data-theme]){--bg:#0c1118;--ink:#e8edf8;--muted:#9aa6c4;--line:#26314d;--cobalt:#8fb0ff;--oncobalt:#0c1118;--tint:#111926;color-scheme:dark}}
html{background:var(--bg)}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.65;overflow-wrap:anywhere}
main{flex:1;width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
a{color:var(--cobalt);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--cobalt);outline-offset:3px;border-radius:4px}
h1,h2,h3,h4{line-height:1.2;margin:0;font-weight:400;letter-spacing:-.01em}
p{margin:0 0 1em}
img{max-width:100%;height:auto}
.mono{font-family:var(--mono)}
.small{font-size:16px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:8px;z-index:10}
.skip:focus{left:8px}

/* header */
.bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 24px;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:baseline;gap:8px;min-height:44px;align-items:center;text-decoration:none;color:var(--ink)}
.logo{font-family:var(--mono);font-weight:600;font-size:20px;letter-spacing:-.02em}
.brand-sub{font-family:var(--mono);font-size:16px;color:var(--muted)}
.nav{display:flex;flex-wrap:wrap;align-items:center;gap:0 12px;font-size:16px}
.nav>a{min-height:44px;min-width:44px;padding:0 4px;display:flex;align-items:center;justify-content:center;color:var(--ink);text-decoration:none}
.nav>a:hover{color:var(--cobalt)}
.nav>a[aria-current="page"]{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:8px;text-decoration-color:var(--cobalt)}
.langsw{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;font-size:16px;font-family:var(--mono)}
.langsw a{min-height:44px;min-width:44px;display:flex;align-items:center;justify-content:center;color:var(--ink);text-decoration:none;padding:0 10px}
.langsw a[aria-current="true"]{background:var(--ink);color:var(--bg)}

/* hero */
.hero{padding:72px 0 56px}
.hero .code{margin:0 0 20px;color:var(--muted);font-size:16px}
.hero h1{font-size:clamp(32px,6.4vw,64px);line-height:1.12;max-width:16em}
.hero-sub{margin:20px 0 0;font-size:clamp(18px,2.2vw,22px);color:var(--muted);max-width:30em}
.strip{list-style:none;margin:40px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:16px}
.strip a{display:block;width:64px;height:64px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.strip a:hover{border-color:var(--cobalt)}
.strip img{display:block;width:64px;height:64px}

/* sections */
.sec{padding:64px 0}
.sec.tint{background:var(--tint);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec>.wrap>h2{font-size:clamp(26px,3.6vw,36px);margin-bottom:12px;display:flex;align-items:baseline;gap:14px}
.sn{flex:none;white-space:nowrap;font-size:16px;font-weight:400;color:var(--muted)}
.lead{color:var(--muted);max-width:40em;margin:0 0 32px}
.rest{color:var(--muted);max-width:40em;margin:0 0 32px}
.note{color:var(--muted);font-size:16px;margin-top:16px}

/* philosophy */
.principles{list-style:none;margin:0;padding:0;display:grid;gap:0}
.principle{display:grid;grid-template-columns:48px 1fr;gap:8px 16px;padding:24px 0;border-top:1px solid var(--line)}
.principle:last-child{border-bottom:1px solid var(--line)}
.pn{font-size:16px;color:var(--cobalt);padding-top:4px}
.principle h3{font-size:20px;margin-bottom:6px}
.principle p{color:var(--muted);margin:0 0 10px;max-width:40em}
.principle .kept{margin:0 0 8px;font-size:16px}
.chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chips li{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:2px 12px 2px 4px;border:1px solid var(--line);border-radius:16px;font-size:16px}
.chips img{border-radius:6px;display:block}

/* game cards */
.game-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(440px,100%),1fr));gap:24px}
.game{--ac:var(--a);padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);display:flex;flex-direction:column;gap:14px;min-width:0;scroll-margin-top:16px}
@supports (background:color-mix(in srgb,red 5%,white)){.game{background:color-mix(in srgb,var(--ac) 7%,var(--bg));border-color:color-mix(in srgb,var(--ac) 28%,var(--line))}.cmp-card{background:color-mix(in srgb,var(--ac) 5%,var(--bg))}}
.game-head{display:flex;gap:16px;align-items:center}
.game-icon{border-radius:14px;flex:none}
.game h3{font-size:24px}
.sub{margin:2px 0 0;color:var(--muted);font-size:16px}
.meta{margin:6px 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;font-size:16px;color:var(--muted)}
.badge{display:inline-block;padding:1px 10px;border:1px solid var(--ac);border-radius:12px;color:var(--ac);font-size:14px;font-weight:600}
.tagline{margin:0;font-size:18px}
.price{margin:0;font-size:16px;color:var(--muted)}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:20px}
.cols h4{font-size:16px;font-family:var(--mono);font-weight:600;color:var(--ac);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}
.cols ol{margin:0;padding-left:20px;font-size:16px;color:var(--muted)}
.cols li{margin-bottom:6px}
.cols li strong{color:var(--ink);font-weight:600}
.links{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:0 20px}
.textlink{display:inline-flex;align-items:center;min-height:44px;min-width:44px;font-size:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:0 20px;border-radius:10px;background:var(--cobalt);color:var(--oncobalt);text-decoration:none;font-weight:600;font-size:16px;border:1px solid var(--cobalt)}
.btn:hover{text-decoration:underline}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--cobalt);color:var(--cobalt);text-decoration:none}
.game .btn{background:var(--ac);border-color:var(--ac);color:var(--bg)}

/* compare */
.cmp-wide{overflow-x:auto}
.cmp{border-collapse:collapse;width:100%;min-width:760px;font-size:16px}
.cmp th,.cmp td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.cmp thead th{font-weight:600;border-bottom:2px solid var(--a);color:var(--a)}
.cmp tbody th{font-weight:600;color:var(--muted);white-space:nowrap}
.cmp-cards{display:none}
.cmp-card{--ac:var(--a);padding:20px;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:16px}
.cmp-card h3{font-size:18px;color:var(--ac);margin-bottom:10px}
.cmp-card dl{margin:0}
.cmp-card dl div{display:grid;grid-template-columns:110px 1fr;gap:10px;padding:6px 0;border-top:1px solid var(--line);font-size:16px}
.cmp-card dt{color:var(--muted)}.cmp-card dd{margin:0}

/* chooser + made */
.choose,.made{list-style:none;margin:0;padding:0}
.choose li{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;padding:16px 0;border-top:1px solid var(--line)}
.choose li:last-child{border-bottom:1px solid var(--line)}
.choose li>span{flex:1 1 280px}
.made li{--ac:var(--a);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 20px;padding:14px 0 14px 16px;border-top:1px solid var(--line);border-left:3px solid var(--ac)}
.made h3{font-size:18px}

/* inner pages */
.crumbs{font-size:16px;color:var(--muted);padding:16px 0 0}
.crumbs a{color:var(--muted);display:inline-flex;align-items:center;min-height:44px;min-width:44px}
.prose{max-width:720px;padding:24px 0 24px}
.prose h1{font-size:clamp(28px,4.4vw,40px);margin-bottom:20px}
.prose h2{font-size:22px;margin:36px 0 10px}
.prose h3{font-size:18px;margin:24px 0 6px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 1em}
.prose li{margin-bottom:6px}
.prose code{font-family:var(--mono);font-size:1em;background:var(--tint);padding:1px 6px;border-radius:6px}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.prose .lead{margin:0 0 24px}
.updated{margin:0;padding:8px 0 56px;font-size:14px;color:var(--muted)}

/* journal: home cards (newest 3), list, post. Same tokens and dark mode as the rest of the site, no extra colours. */
.journal__head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:0 20px;margin-bottom:12px}
.journal__head h2{font-size:clamp(26px,3.6vw,36px);display:flex;align-items:baseline;gap:14px}
.journal__all{margin-left:auto;gap:6px}
.journal__grid{display:grid;grid-template-columns:1fr;gap:16px}
.journal-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);transition:border-color .15s}
.journal-card__link{display:block;height:100%;padding:20px;color:inherit;text-decoration:none;border-radius:inherit}
.journal-card time,.jitem time,.post-meta{display:block;font-size:16px;color:var(--muted)}
.journal-card time{margin-bottom:6px}
.journal-card h3{font-size:20px;line-height:1.3;margin:0 0 8px}
.journal-card p{margin:0;font-size:16px;color:var(--muted)}
.journal-card:hover,.journal-card:focus-within{border-color:var(--cobalt)}
.journal-card__link:hover h3{text-decoration:underline;text-underline-offset:3px}
.jhead{padding-bottom:8px}
:lang(ko) :is(.journal-card,.jitem,.jhead,.post){word-break:keep-all}
.jlist{list-style:none;margin:0;padding:0;max-width:720px}
.jitem{padding:20px 0;border-top:1px solid var(--line)}
.jitem:last-child{border-bottom:1px solid var(--line)}
.jitem time{margin-bottom:4px}
.jitem h2{font-size:22px;margin:0 0 6px}
.jitem h2 a{display:inline-block;min-height:44px;padding:8px 0;color:var(--ink);text-decoration:none}
.jitem h2 a:hover{color:var(--cobalt);text-decoration:underline}
.jitem p{margin:0;color:var(--muted)}
.jempty{margin:0;padding:24px 0;max-width:720px;color:var(--muted)}
.jfoot{margin:24px 0 0}
.post-meta{margin:0 0 28px}
.prose blockquote{margin:0 0 1em;padding:2px 0 2px 16px;border-left:3px solid var(--cobalt);color:var(--muted)}
.prose blockquote p:last-child{margin-bottom:0}
@media (min-width:640px){.journal__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.journal-card:nth-child(3):last-child{grid-column:1/-1}}
@media (min-width:900px){.journal__grid{grid-template-columns:repeat(3,minmax(0,1fr))}.journal-card:nth-child(3):last-child{grid-column:auto}}
@media (prefers-reduced-motion:reduce){.journal-card{transition:none}}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:40px 0 24px;background:var(--bg)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.foot-brand p{margin:6px 0 0;color:var(--muted);font-size:16px}
.foot-h{font-size:16px;font-family:var(--mono);font-weight:600;color:var(--muted);margin-bottom:6px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li a{display:flex;align-items:center;min-height:44px;font-size:16px;color:var(--ink);text-decoration:none}
.site-footer li a:hover{color:var(--cobalt);text-decoration:underline}
.foot-langs{margin:24px 0 0;display:flex;flex-wrap:wrap;gap:0 12px;font-size:16px}
.foot-langs a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:0 4px;color:var(--muted)}
.foot-langs a[aria-current="true"]{color:var(--ink);text-decoration:none}

/* game accents: dark themes (dark, noir) use --a2 */
:root:is([data-theme="dark"],[data-theme="noir"]) :is(.game,.cmp-card,.made li){--ac:var(--a2)}
:root:is([data-theme="dark"],[data-theme="noir"]) .cmp thead th{border-bottom-color:var(--a2);color:var(--a2)}
@media (prefers-color-scheme:dark){:root:not([data-theme]) :is(.game,.cmp-card,.made li){--ac:var(--a2)}:root:not([data-theme]) .cmp thead th{border-bottom-color:var(--a2);color:var(--a2)}}

/* theme switch (light / dark / noir) */
.themesw{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.themesw button{all:unset;box-sizing:border-box;width:44px;height:44px;display:flex;align-items:center;justify-content:center;color:var(--ink);cursor:pointer}
.themesw button:hover{color:var(--cobalt)}
.themesw button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.themesw button:focus-visible{outline:3px solid var(--cobalt);outline-offset:-3px}
.langsw a:focus-visible{outline-offset:-3px} /* the group clips overflow, so the ring sits inside */
/* a focused *selected* cell: the ring is drawn on the filled background, so it takes the page colour (>= 9:1 in all three themes), not cobalt */
.themesw button[aria-pressed="true"]:focus-visible,.langsw a[aria-current="true"]:focus-visible{outline-color:var(--bg)}
.themesw svg{display:block}
/* no JS = no data-theme: the buttons would do nothing, so hide them (the device setting decides the theme) */
:root:not([data-theme]) .themesw{display:none}
/* forced colors: selected = filled Highlight, focus = ring; written after the focus rules above so both show */
@media (forced-colors:active){
  .themesw button[aria-pressed="true"],.langsw a[aria-current="true"]{background:Highlight;color:HighlightText}
  .themesw button:focus-visible,.langsw a:focus-visible{outline:3px solid CanvasText;outline-offset:-3px}
  .themesw button[aria-pressed="true"]:focus-visible,.langsw a[aria-current="true"]:focus-visible{outline-color:HighlightText}
}
html.theme-anim,html.theme-anim *{transition:background-color .2s,color .2s,border-color .2s !important}
@media (prefers-reduced-motion:reduce){html.theme-anim,html.theme-anim *{transition:none !important}}

/* noir: near-black with a faint violet; static details only (no glow, no animation) */
@supports (background:color-mix(in srgb,red 5%,white)){
:root[data-theme="noir"] .game{
  border:1px solid transparent;
  background:
    linear-gradient(color-mix(in srgb,var(--ac) 3%,var(--tint)),color-mix(in srgb,var(--ac) 3%,var(--tint))) padding-box,
    linear-gradient(135deg,rgba(185,162,242,.55),rgba(185,162,242,.10) 35%,rgba(124,84,200,.10) 65%,rgba(185,162,242,.35)) border-box}
:root[data-theme="noir"] .journal-card{
  border:1px solid transparent;
  background:
    linear-gradient(var(--tint),var(--tint)) padding-box,
    linear-gradient(135deg,rgba(185,162,242,.45),rgba(185,162,242,.08) 40%,rgba(124,84,200,.08) 70%,rgba(185,162,242,.28)) border-box}
:root[data-theme="noir"] .journal-card:hover,:root[data-theme="noir"] .journal-card:focus-within{border-color:transparent;box-shadow:0 0 0 1px var(--cobalt)} }
/* violet vignette from the top-left corner of the page (on body, not .hero, so there is no hard edge under the header) */
:root[data-theme="noir"] body{background-image:radial-gradient(ellipse 900px 560px at 12% 0,rgba(124,84,200,.18),transparent 70%);background-repeat:no-repeat}
/* noir: accent-coloured text inside cards is 22% toward --ink (calmer on near-black; 8.7:1 or better); icons, buttons and borders keep --ac */
:root[data-theme="noir"] :is(.game .badge,.cols h4,.cmp-card h3,.cmp thead th){color:color-mix(in srgb,var(--a2) 78%,var(--ink))}
/* noir: the selected cell is the lavender (9.0:1 with --bg) instead of the near-white ink */
@media (forced-colors:none){:root[data-theme="noir"] :is(.themesw button[aria-pressed="true"],.langsw a[aria-current="true"]){background:var(--cobalt);color:var(--bg)}} /* not in forced colors: Highlight rules above must win there */
:root[data-theme="noir"] ::selection{background:#4a3480;color:#fff}
:root[data-theme="noir"]{scrollbar-color:#3a2f52 var(--bg)}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.cmp-wide{display:none}.cmp-cards{display:block}.hero{padding:48px 0 40px}.sec{padding:48px 0}}
@media (max-width:520px){
  :root{--gutter:16px}
  body{font-size:16px}
  .foot-grid{grid-template-columns:1fr}
  .game{padding:20px}
  .bar{padding-top:8px;padding-bottom:8px}
  .cmp-card dl div{grid-template-columns:96px 1fr}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* code fences in journal posts: wrap-free block that scrolls sideways instead of widening the page */
.prose pre{margin:0 0 1em;padding:14px 16px;overflow-x:auto;background:var(--tint);border:1px solid var(--line);border-radius:10px;max-width:100%;-webkit-overflow-scrolling:touch}
.prose pre code{display:block;padding:0;background:none;border-radius:0;font-size:16px;line-height:1.6;white-space:pre}