/* Thirteen Squares — ink, paper & amber */
:root{
  --ink:#17202e;--ink2:#243045;--paper:#f5f3ee;--paper2:#ebe7dd;--line:#d9d3c5;
  --amber:#f2a922;--amber2:#d48d0c;--coral:#e8505b;--mint:#2bb3a3;--sky:#4b7bec;--plum:#8e5ac8;
  --text:#1d2533;--muted:#5f6878;--r:10px;--sh:0 8px 24px rgba(23,32,46,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Karla,system-ui,sans-serif;font-size:17px;line-height:1.7;color:var(--text);background:var(--paper)}
h1,h2,h3{font-family:Sora,system-ui,sans-serif;line-height:1.2;color:var(--ink);letter-spacing:-.01em}
a{color:var(--sky)}
img{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px;top:8px;background:var(--amber);color:var(--ink);padding:8px 14px;z-index:99}
.skip:focus{left:8px}
.small{font-size:.88rem;color:var(--muted)}
.eyebrow{font-family:Sora,sans-serif;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;color:var(--amber2);margin:0 0 .4rem}
.eyebrow::before{content:"";display:inline-block;width:10px;height:10px;background:var(--amber);margin-right:8px;vertical-align:0;border-radius:2px}
.sub{color:var(--muted);margin-top:-.4rem}
.section{padding:72px 20px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}

/* header */
.site-header{background:var(--ink);position:sticky;top:0;z-index:50;border-bottom:4px solid var(--amber)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.brand strong{font-family:Sora,sans-serif;font-size:1.2rem;font-weight:800;display:block;line-height:1;color:#fff}
.brand strong b{color:var(--amber);font-weight:800}
.brand small{display:block;font-size:.74rem;color:#aab3c2;margin-top:3px}
.menu{display:flex;gap:4px}
.menu a{color:#dfe4ec;text-decoration:none;font-weight:500;padding:8px 12px;border-radius:6px}
.menu a:hover{background:var(--ink2);color:var(--amber)}
.burger{display:none;color:#fff;font-size:1.6rem;cursor:pointer}

/* buttons */
.btn{display:inline-block;background:var(--amber);color:var(--ink);font-family:Sora,sans-serif;font-weight:700;font-size:.95rem;padding:12px 22px;border-radius:8px;text-decoration:none;border:2px solid var(--amber);cursor:pointer;box-shadow:0 4px 0 var(--amber2);transition:transform .1s}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(2px);box-shadow:0 1px 0 var(--amber2)}
.btn.ghost{background:transparent;color:inherit;border-color:currentColor;box-shadow:none}
.pill{display:inline-block;background:var(--paper2);color:var(--ink);font-size:.82rem;font-weight:700;padding:4px 12px;border-radius:4px;margin:0 0 1rem}
.pill.light{background:rgba(242,169,34,.16);color:var(--amber)}

/* hero */
.hero{background:var(--ink);color:#dfe4ec;padding:80px 0 90px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-60px;bottom:-60px;width:300px;height:300px;opacity:.07;
  background:repeating-conic-gradient(#fff 0 25%,transparent 0 50%) 0 0/60px 60px}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero h1{color:#fff;font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800;margin:0 0 1rem}
.hero h1 em{font-style:normal;color:var(--amber);border-bottom:6px solid var(--coral)}
.hero .lead{font-size:1.12rem;color:#c3cad6}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:1.6rem}
.hero .btn.ghost{color:#fff}
.hero-card{background:var(--ink2);border:1px solid #33415a;border-radius:16px;padding:26px}
.mini{display:grid;grid-template-columns:repeat(5,1fr);gap:5px;max-width:180px;margin:0 auto}
.mini i{aspect-ratio:1;border-radius:4px;background:#33415a}
.mini i.d{background:var(--paper)}
.mini i:nth-child(13){background:var(--amber)}
.count{text-align:center;margin:.8rem 0 1rem;color:#aab3c2;font-size:.92rem}
.count b{font-family:Sora,sans-serif;color:var(--amber);font-size:1.4rem}
.mlist{list-style:none;margin:0;padding:0}
.mlist li{border-top:1px solid #33415a}
.mlist a{display:flex;gap:10px;padding:10px 0;color:#e7ebf1;text-decoration:none;font-size:.95rem;line-height:1.4}
.mlist a:hover{color:var(--amber)}

/* categories */
.cats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.catc{display:flex;flex-direction:column;gap:2px;padding:18px;border-radius:var(--r);text-decoration:none;color:var(--ink);font-family:Sora,sans-serif;font-weight:700;border:2px solid var(--ink);box-shadow:4px 4px 0 var(--ink);transition:transform .12s}
.catc:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.catc span{font-size:1.5rem}
.catc small{font-family:Karla,sans-serif;font-weight:500;color:var(--muted)}
.t-0{background:#fde8c4}.t-1{background:#d7f0ec}.t-2{background:#fbd9dc}.t-3{background:#dde6fb}.t-4{background:#eadff6}.t-5{background:#efeadb}

/* lights out */
.ink{background:var(--ink);color:#c3cad6}
.ink h2{color:#fff}
.ink em{color:var(--amber);font-style:normal}
.tips{list-style:none;padding:0;margin:1.2rem 0 0}
.tips li{padding:10px 0 10px 28px;border-top:1px solid #33415a;position:relative}
.tips li::before{content:"";position:absolute;left:0;top:18px;width:12px;height:12px;background:var(--amber);border-radius:2px}
.tips b{color:#fff}
.game{background:var(--ink2);border-radius:18px;padding:24px;border:1px solid #33415a}
.lo{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;max-width:380px;margin:0 auto}
.lo .cell{aspect-ratio:1;border:0;border-radius:8px;background:#2c3850;cursor:pointer;box-shadow:inset 0 -4px 0 rgba(0,0,0,.25);transition:background .15s,transform .08s}
.lo .cell:hover{background:#3a4866}
.lo .cell:active{transform:scale(.94)}
.lo .cell.lit{background:var(--amber);box-shadow:0 0 18px rgba(242,169,34,.55),inset 0 -4px 0 var(--amber2)}
.lo .cell:focus-visible{outline:3px solid var(--mint);outline-offset:2px}
.lo.won .cell{background:var(--mint)}
.lo-bar{display:flex;justify-content:space-between;max-width:380px;margin:16px auto 0;color:#aab3c2}
.lo-bar b{color:#fff;font-family:Sora,sans-serif}
.lo-actions{display:flex;gap:10px;justify-content:center;margin-top:14px;flex-wrap:wrap}
.lo-actions .btn.ghost{color:#fff}
.lo-msg{text-align:center;color:var(--mint);font-weight:700;min-height:1.6em;margin:12px 0 0}

/* riddles */
.riddles{display:grid;gap:12px;margin-top:1.4rem}
.riddle{background:#fff;border:2px solid var(--ink);border-radius:var(--r);padding:0;box-shadow:4px 4px 0 var(--amber)}
.riddle summary{cursor:pointer;padding:16px 18px;font-weight:700;list-style:none;display:flex;gap:12px;align-items:baseline}
.riddle summary::-webkit-details-marker{display:none}
.riddle summary span{font-family:Sora,sans-serif;color:var(--coral);font-size:.85rem;white-space:nowrap}
.riddle p{margin:0;padding:0 18px 16px 18px;color:var(--muted)}
.riddle[open]{box-shadow:4px 4px 0 var(--mint)}

/* articles */
.paper{background:var(--paper2)}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:1.2rem 0 1.6rem}
.chip{background:#fff;border:2px solid var(--ink);color:var(--ink);font-family:Sora,sans-serif;font-weight:600;font-size:.85rem;padding:6px 14px;border-radius:6px;cursor:pointer}
.chip.on,.chip:hover{background:var(--ink);color:var(--amber)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.thumb{display:flex;align-items:center;justify-content:center;height:130px;text-decoration:none;font-size:3rem;position:relative;overflow:hidden}
.thumb::before{content:"";position:absolute;inset:0;opacity:.18;background:repeating-conic-gradient(var(--ink) 0 25%,transparent 0 50%) 0 0/26px 26px}
.thumb span{position:relative;background:#fff;width:76px;height:76px;display:flex;align-items:center;justify-content:center;border-radius:12px;border:2px solid var(--ink);box-shadow:3px 3px 0 var(--ink)}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.meta{display:flex;justify-content:space-between;gap:8px;font-size:.8rem;color:var(--muted);margin:0 0 .5rem}
.cat{font-weight:700;color:var(--coral)}
.card h3{font-size:1.08rem;margin:0 0 .5rem}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--sky)}
.card p{font-size:.93rem;color:var(--muted);margin:0 0 1rem}
.more{margin-top:auto;font-weight:700;text-decoration:none;color:var(--ink);font-size:.9rem}
.more:hover{color:var(--amber2)}

/* glossary & faq */
.gloss{margin:0}
.gloss div{padding:12px 0;border-bottom:1px dashed var(--line)}
.gloss dt{font-family:Sora,sans-serif;font-weight:700;color:var(--ink)}
.gloss dd{margin:2px 0 0;color:var(--muted)}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:700;color:var(--ink)}
.faq details p{color:var(--muted);margin:.6rem 0 0}

/* partners & cta */
.partners{padding-top:0}
.plist{display:flex;flex-wrap:wrap;gap:8px}
.plist a{background:#fff;border:1px solid var(--line);border-radius:6px;padding:6px 12px;font-size:.88rem;text-decoration:none;color:var(--ink)}
.plist a:hover{border-color:var(--ink);background:var(--amber)}
.cta-band{display:flex;justify-content:space-between;align-items:center;gap:24px;background:var(--coral);color:#fff;border-radius:16px;padding:36px 40px;margin-bottom:72px;border:3px solid var(--ink);box-shadow:8px 8px 0 var(--ink)}
.cta-band h2{color:#fff;margin:0 0 .4rem}
.cta-band p{margin:0}

/* footer */
.site-footer{background:var(--ink);color:#aab3c2;font-size:.94rem}
.checker{height:16px;background:repeating-conic-gradient(var(--amber) 0 25%,var(--ink) 0 50%) 0 0/16px 16px}
.fgrid{display:grid;grid-template-columns:1.4fr 1.1fr .9fr 1.2fr;gap:36px;padding:56px 20px 30px}
.site-footer h3{color:#fff;font-size:1rem;margin:0 0 .8rem}
.site-footer a{color:#dfe4ec}
.site-footer a:hover{color:var(--amber)}
.site-footer address{font-style:normal;line-height:1.8}
.site-footer .small{color:#8e98aa}
.flist{list-style:none;margin:0;padding:0}
.flist li{margin-bottom:8px;line-height:1.4}
.flist a{text-decoration:none}
.social{display:flex;flex-wrap:wrap;gap:8px;margin-top:1rem}
.social a{border:1px solid #3a4866;border-radius:6px;padding:5px 10px;text-decoration:none;font-size:.85rem}
.policy{border-top:1px solid #2c3850;padding:20px;font-size:.86rem;line-height:1.6}
.fbottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid #2c3850;padding:18px 20px 26px;font-size:.85rem}
.fbottom p{margin:0}

/* article page */
.post-hero{background:var(--ink);padding:52px 0 46px;color:#c3cad6;border-bottom:6px solid var(--amber)}
.post-hero h1{color:#fff;font-size:clamp(1.8rem,4vw,2.7rem);margin:.4rem 0 1rem}
.post-hero .pill{background:var(--amber);color:var(--ink)}
.crumbs{font-size:.85rem;margin-bottom:1rem}
.crumbs a{color:#dfe4ec}
.byline{margin:0;font-size:.92rem}
.byline strong{color:#fff}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding-top:48px;padding-bottom:40px}
.post .lead{font-size:1.15rem;color:var(--ink);border-left:5px solid var(--amber);padding-left:18px;margin-top:0}
.toc{background:#fff;border:2px solid var(--ink);border-radius:var(--r);padding:18px 22px;margin:1.6rem 0;box-shadow:4px 4px 0 var(--mint)}
.toc strong{font-family:Sora,sans-serif}
.toc ol{margin:.5rem 0 0;padding-left:1.2rem}
.toc a{color:var(--ink)}
.post h2{font-size:1.45rem;margin:2.2rem 0 .8rem;display:flex;gap:12px;align-items:center;scroll-margin-top:90px}
.post h2 span{flex:none;background:var(--ink);color:var(--amber);font-size:.85rem;width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:6px}
.readalso{background:var(--paper2);border-left:5px solid var(--coral);padding:14px 18px;margin:1.6rem 0;border-radius:0 var(--r) var(--r) 0}
.readalso span{display:block;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--coral)}
.readalso a{font-weight:700;color:var(--ink)}
.post .riddle{margin:2rem 0}
.note{background:#fff4e0;border:1px solid #f0cf94;border-radius:var(--r);padding:14px 18px;font-size:.92rem}
.source{background:#fff;border:1px dashed var(--muted);border-radius:var(--r);padding:14px 18px;font-size:.94rem;margin:1.4rem 0}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin:1rem 0}
.tag{background:var(--paper2);border-radius:4px;padding:3px 10px;font-size:.82rem;color:var(--muted)}
.share{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-weight:700;margin:1rem 0}
.share a{background:var(--ink);color:#fff;text-decoration:none;font-size:.84rem;padding:6px 12px;border-radius:6px;font-weight:500}
.share a:hover{background:var(--amber);color:var(--ink)}
.author-box{display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;margin:1.6rem 0}
.av{flex:none;width:56px;height:56px;border-radius:10px;background:var(--amber);color:var(--ink);font-family:Sora,sans-serif;font-weight:800;font-size:1.5rem;display:flex;align-items:center;justify-content:center;border:2px solid var(--ink)}
.author-box p{margin:.2rem 0 0;font-size:.92rem;color:var(--muted)}
.postnav{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:2px solid var(--ink);padding-top:16px;font-weight:700}
.postnav a{color:var(--ink);text-decoration:none}
.postnav a:hover{color:var(--amber2)}
.sidebar{display:flex;flex-direction:column;gap:22px}
.box{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;position:sticky;top:90px}
.box+.box{position:static}
.box.dark{background:var(--ink);color:#c3cad6;border:0;box-shadow:6px 6px 0 var(--amber)}
.box.dark h3{color:#fff;margin-top:0}
.box h3{font-size:1.05rem;margin:0 0 .6rem}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{border-top:1px solid var(--line)}
.side-list a{display:block;padding:10px 0;color:var(--ink);text-decoration:none;font-size:.92rem;line-height:1.4}
.side-list em{display:block;font-style:normal;font-size:.74rem;color:var(--coral);font-weight:700}
.side-list a:hover{color:var(--sky)}
.related{padding-bottom:72px}

/* responsive */
@media (max-width:980px){
  .grid{grid-template-columns:1fr 1fr}
  .fgrid{grid-template-columns:1fr 1fr}
  .article-layout{grid-template-columns:1fr}
  .box{position:static}
}
@media (max-width:820px){
  .hero-grid,.two{grid-template-columns:1fr;gap:32px}
  .burger{display:block}
  .menu{display:none;position:absolute;top:70px;left:0;right:0;background:var(--ink);flex-direction:column;padding:10px 20px 18px;border-bottom:4px solid var(--amber)}
  #menu:checked~.menu{display:flex}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px}
}
@media (max-width:560px){
  body{font-size:16px}
  .grid,.fgrid,.cats{grid-template-columns:1fr}
  .section{padding:52px 16px}
  .wrap{padding-left:16px;padding-right:16px}
  .brand small{display:none}
}