:root{color-scheme:dark;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#f3f4f6}*{box-sizing:border-box}body{margin:0;padding:clamp(8px,1.5vw,24px);background:radial-gradient(circle at 18% 0%,#2563eb1f,transparent 30rem),linear-gradient(135deg,#111827,#030712 58%,#000);min-height:100vh;background-attachment:fixed}.shell{width:100%;max-width:690px;margin:auto}header,main{border:1px solid #ffffff1a;border-radius:16px;background:#ffffff09;box-shadow:0 24px 60px #0005}.banner{position:relative;overflow:hidden;padding:22px 24px 18px;margin-bottom:16px;text-align:center;background:radial-gradient(ellipse at 50% 100%,#123b65,#07101f 75%)}.eyebrow{font:10px monospace;letter-spacing:.16em;color:#93c5fd}h1{margin:8px 0;font-family:monospace;font-size:clamp(32px,7vw,52px);letter-spacing:-.04em;color:#dbeafe;text-shadow:2px 3px #1569a1,4px 6px #040c1a}h1 span{color:#67e8f9}.banner>p:last-of-type{font-size:12px;color:#b2c5da}.blocks{display:flex;justify-content:center;gap:7px;margin-top:16px}.blocks i{width:15px;height:15px;background:#67e8f9;border:3px outset #a5f3fc;box-shadow:0 0 12px #22d3ee33}.blocks i:nth-child(2n){background:#3b82f6;border-color:#93c5fd}main{padding:clamp(10px,2vw,24px);display:grid;gap:12px}.game-label{display:flex;justify-content:space-between;gap:10px;color:#93c5fd;font:10px monospace;letter-spacing:.05em}.screen{width:100%;max-width:640px;aspect-ratio:4/3;max-height:480px;background:#000;border:1px solid #333;overflow:hidden;justify-self:center}.screen iframe{display:block;width:100%;height:100%;border:0}.cover{position:relative;display:grid;place-items:center;width:100%;height:100%;overflow:hidden}.cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4}.cover:after{content:"";position:absolute;inset:0;background:linear-gradient(#03071255,#030712dd)}.cover-content{z-index:1;display:grid;justify-items:center;gap:16px;padding:20px;text-align:center}.cover-content p{font-size:20px;color:#e0f2fe;font-family:monospace}.cover-content small{font-size:11px;color:#cbd5e1}p{margin:0;font-size:13px;color:#9ca3af;line-height:1.6}.controls{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}button,.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid #60a5fa44;background:#111827;border-radius:9px;color:#dbeafe;font:inherit;font-size:13px;cursor:pointer;text-decoration:none}.controls>*{flex:0 1 180px}#start-game{background:#2563eb55;font-size:15px}button:hover,.button:hover{background:#2563eb55}:focus-visible{outline:2px solid #bfdbfe;outline-offset:3px}#game-status{text-align:center;color:#93c5fd;font-size:12px}.hint,.edition{font-size:12px;text-align:center}.edition{color:#6b7280}details{border-top:1px solid #ffffff1a;padding-top:12px;color:#9ca3af;font-size:13px}summary{cursor:pointer;color:#dbeafe}details p{margin-top:12px}.screen:fullscreen{width:100vw;height:100vh;max-width:none;max-height:none;aspect-ratio:auto;border:0;background:#000}.site-footer{max-width:640px;margin-left:auto;margin-right:auto}@media(max-width:480px){.banner{padding:18px 12px}.game-label{font-size:9px}.controls>*{flex:1}.hint{font-size:11px}}@media(min-width:601px) and (max-height:800px){.shell{max-width:max(430px,min(690px,calc((100svh - 285px)*4/3 + 50px)))}.banner{padding:12px}h1{font-size:36px;margin:4px 0}.blocks{display:none}}
/* Footer shared with franz.kraibacher.com */
.site-footer{margin-top:24px;padding:0 0 24px;text-align:left;display:grid;gap:20px}
.site-footer>div{padding:24px;border:1px solid #ffffff1a;border-radius:16px;background:#ffffff09;box-shadow:0 24px 60px #0005;backdrop-filter:blur(10px);font-size:14px;line-height:1.625;color:#9ca3af}
.site-footer h2{margin:0 0 16px;color:#e5e7eb;font-size:16px;font-weight:600;line-height:1.5}
.site-footer>div p{font-size:14px;line-height:1.625;margin-bottom:16px}
.site-footer>div p:last-child{margin-bottom:0}
.site-footer strong{color:#e5e7eb}
.site-footer>div a{color:#60a5fa}
.site-footer>div a:hover{color:#bfdbfe}
.site-footer>p{font-size:12px;text-align:center;color:#6b7280}
.site-footer>p:first-of-type{padding-bottom:16px;border-bottom:1px dotted #ffffff26}
.site-footer>p:last-child{color:#4b5563}
.site-footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;font-size:12px}
.site-footer>p a,.site-footer nav a{color:#6b7280}
.site-footer>p a:hover,.site-footer nav a:hover{color:#d1d5db}

.site-footer a{text-decoration:none}

header.image-banner{padding:0;overflow:hidden;background:#050c1c}header.image-banner img{display:block;width:100%;height:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}