:root{color-scheme:light dark;--paper:#f4f7fd;--panel:#fff;--ink:#101b32;--muted:#50617b;--line:#d7dfed;--blue:#176db6;--focus:#1557ab;--accent:var(--blue);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);line-height:1.55}a{color:var(--blue);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid var(--focus);outline-offset:4px}.skip{position:absolute;left:1rem;top:-5rem;z-index:10;background:var(--panel);padding:1rem}.skip:focus{top:1rem}.shell{width:min(1120px,calc(100% - 3rem));margin-inline:auto}header{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:1.25rem 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--ink);font-family:"Avenir Next",Avenir,sans-serif;font-size:1.35rem;font-weight:800;letter-spacing:-.045em}.brand img{width:40px;height:40px;border-radius:10px}nav{display:flex;gap:1.2rem;flex-wrap:wrap;font-size:.9rem}nav a{color:var(--muted);text-decoration:none}nav a[aria-current=page]{color:var(--ink);font-weight:700}main{min-height:70vh;padding:3rem 0 4rem}h1,h2,h3{font-family:"Avenir Next",Avenir,"Segoe UI",sans-serif;line-height:1.15;letter-spacing:-.035em}h1{font-size:clamp(2.2rem,5.2vw,3.75rem);margin:0 0 .75rem;max-width:20ch}h2{font-size:1.55rem;margin:0 0 1rem}h3{font-size:1.1rem;margin:1.5rem 0 .6rem}.intro{margin:0 0 2rem;color:var(--muted);max-width:60ch}.eyebrow{font-size:.9rem;font-weight:700;color:var(--accent);margin:0 0 .65rem}.puzzle-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.puzzle-card{display:grid;grid-template-columns:58px minmax(0,1fr);align-items:center;gap:1rem;padding:1.35rem;border:1px solid var(--line);border-radius:18px;background:var(--panel);text-decoration:none;color:var(--ink)}.puzzle-card:hover{border-color:var(--accent);box-shadow:0 4px 20px #1228560b}.puzzle-card h2{font-size:1.12rem;margin:0 0 .25rem;letter-spacing:-.025em}.puzzle-card p{font-size:.875rem;color:var(--muted);margin:0}.mark{display:grid;place-items:center;min-height:58px;color:var(--accent);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-weight:700;font-size:1.1rem;letter-spacing:-.07em;background:color-mix(in srgb,var(--accent) 9%,var(--panel));border-radius:13px}.board-title{display:flex;align-items:center;gap:1rem;margin-bottom:1.8rem}.board-title .mark{width:76px;min-height:76px;font-size:1.6rem}.board-title h1{font-size:clamp(2rem,4vw,3rem);margin:0}.board-title p{margin:.4rem 0 0;color:var(--muted)}.back{display:inline-block;margin-bottom:1.5rem;font-size:.9rem}.controls{display:flex;align-items:flex-end;flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem}.controls label{display:grid;gap:.4rem;color:var(--muted);font-size:.875rem;flex:1;min-width:150px}select,input,textarea{border:1px solid var(--line);border-radius:9px;color:var(--ink);background:var(--panel);padding:.7rem .85rem;width:100%;min-width:0}button,.button{display:inline-flex;justify-content:center;align-items:center;min-height:46px;padding:.6rem 1rem;border-radius:9px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer;font-weight:600;text-decoration:none}button.primary{background:var(--blue);border-color:var(--blue);color:white}button:disabled{opacity:.6;cursor:wait}.board{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden}.board-meta{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.7rem;margin:0 0 .8rem;font-size:.875rem;color:var(--muted)}table{width:100%;border-collapse:collapse;font-size:1rem;table-layout:fixed}th,td{padding:1rem;text-align:left;border-bottom:1px solid var(--line);overflow-wrap:anywhere}th{background:color-mix(in srgb,var(--accent) 5%,var(--panel));font-size:.875rem;color:var(--muted);font-weight:600}th:first-child,td:first-child{width:70px;text-align:center}th:last-child,td:last-child{width:32%;text-align:right}tr:last-child td{border:0}.rank{font:700 1rem ui-monospace,SFMono-Regular,monospace}.metric{font:600 .98rem ui-monospace,SFMono-Regular,monospace}.detail{display:block;color:var(--muted);font-size:.875rem;margin-top:.2rem}.state{padding:2rem;text-align:center;color:var(--muted)}.state strong{display:block;color:var(--ink);font-size:1.15rem;margin-bottom:.5rem}.error{color:#ad2929;background:color-mix(in srgb,#df6868 8%,var(--panel));padding:1rem;border-radius:9px;margin:1rem 0}.note{font-size:.875rem;color:var(--muted);margin-top:1rem}.legal-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:2rem}.contents{position:sticky;top:1rem;align-self:start;font-size:.875rem}.contents a{display:block;margin:.75rem 0;color:var(--muted);text-decoration:none}.legal-section{scroll-margin-top:1.5rem;background:var(--panel);border:1px solid var(--line);padding:1.75rem;border-radius:16px;margin-bottom:1rem}.legal-section h2{font-size:1.35rem}.legal-section p{margin:.8rem 0}.legal-section li{margin:.6rem 0}.legal-section :last-child{margin-bottom:0}.document-dates{font-size:.875rem;color:var(--muted);margin-bottom:2rem}.support-layout{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:start}.help{padding:1.5rem;background:var(--panel);border:1px solid var(--line);border-radius:16px;margin-bottom:1rem}.help h2{font-size:1.2rem}.help p{margin:0;color:var(--muted)}form{padding:1.5rem;background:var(--panel);border:1px solid var(--line);border-radius:16px;display:grid;gap:1.2rem}form label{display:grid;gap:.4rem;font-weight:600}form .hint{font-weight:400;font-size:.875rem;color:var(--muted)}textarea{min-height:160px;resize:vertical}.honeypot{position:absolute;left:-10000px;overflow:hidden;width:1px;height:1px}.success{padding:1rem;border-radius:9px;border:1px solid #2c7b58;background:color-mix(in srgb,#2c7b58 8%,var(--panel));margin-bottom:1rem}footer{border-top:1px solid var(--line);padding:1.5rem 0 2rem;font-size:.875rem;color:var(--muted);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}footer div{display:flex;gap:1rem;flex-wrap:wrap}footer a{color:var(--muted)}.loading{opacity:.65}noscript{display:block;color:var(--muted);margin:1rem 0}
@media(prefers-color-scheme:dark){:root{--paper:#091020;--panel:#131c2d;--ink:#f1f5fc;--muted:#b1c0d9;--line:#2c3950;--blue:#83beff;--focus:#b4d6ff}.mark,.eyebrow{color:color-mix(in srgb,var(--accent) 55%,white)}button.primary{background:#2376c1;color:#fff}.error{color:#ffb2ad}.puzzle-card:hover{border-color:var(--blue)}}
@media(max-width:900px){.puzzle-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.legal-layout{grid-template-columns:1fr}.contents{position:static;display:flex;flex-wrap:wrap;gap:.4rem 1rem;margin-bottom:1rem}.contents h2{width:100%}.contents a{margin:0}.support-layout{grid-template-columns:1fr}}
@media(max-width:540px){.shell{width:calc(100% - 2rem)}header{align-items:flex-start;flex-wrap:wrap;gap:.9rem}nav{gap:1rem;width:100%}main{padding-top:2rem}.puzzle-grid{grid-template-columns:1fr}.puzzle-card{padding:1.15rem}.legal-section{padding:1.25rem}th,td{padding:.85rem .6rem}th:first-child,td:first-child{width:50px}.board-title .mark{width:58px;min-height:58px}.controls label{min-width:120px}footer{flex-direction:column}}
@media(prefers-reduced-motion:no-preference){.puzzle-card,button{transition:border-color .15s,box-shadow .15s}.loading{animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{50%{opacity:.35}}}