@font-face{font-family:DeepSquare;src:url('/assets/fonts/Michroma-DeepSquare.ttf') format('truetype');font-display:swap}
:root{color-scheme:dark;--ink:#f8f8fb;--muted:#b1b9d0;--quiet:#7b87a4;--bg:#070c1a;--panel:rgba(15,23,49,.86);--line:rgba(177,196,255,.18);--mint:#6ee6c1;--blue:#8bd2ff;--violet:#b79dff;--gold:#efd292;--error:#ff9b9b;--board-light:#d9e4ed;--board-dark:#5b7190;--shadow:0 26px 80px rgba(0,2,14,.5)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--ink);background:radial-gradient(circle at 75% 7%,rgba(139,210,255,.16),transparent 32rem),radial-gradient(circle at 7% 65%,rgba(183,157,255,.12),transparent 27rem),var(--bg);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.5}a{color:inherit}button,input,textarea{font:inherit}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:1rem;top:1rem;z-index:20;padding:.6rem .95rem;border-radius:999px;background:#fff;color:#071125}.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--line);background:rgba(7,12,26,.84);backdrop-filter:blur(18px)}.nav-shell,.shell{width:min(1220px,calc(100% - 42px));margin:auto}.nav-shell{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:26px}.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid rgba(110,230,193,.48);border-radius:12px;color:var(--mint);background:linear-gradient(135deg,rgba(110,230,193,.14),rgba(139,210,255,.08));font-size:1.5rem}.brand-word{display:block;font-family:DeepSquare,Inter,sans-serif;font-size:.82rem;letter-spacing:.04em}.brand-sub{display:block;margin-top:2px;color:var(--muted);font-size:.64rem;letter-spacing:.17em;text-transform:uppercase}.nav-actions{display:flex;align-items:center;gap:1.25rem}.site-nav{display:flex;gap:1rem;font-size:.8rem}.site-nav a{color:var(--muted);text-decoration:none}.site-nav a:hover{color:var(--ink)}.language{display:flex;padding:3px;border:1px solid var(--line);border-radius:999px}.language button{padding:.27rem .46rem;border:0;border-radius:999px;color:var(--muted);background:transparent;font-size:.67rem;font-weight:760;cursor:pointer}.language button[aria-pressed=true]{color:#071225;background:var(--ink)}.hero{display:grid;grid-template-columns:minmax(0,.82fr) minmax(420px,1.18fr);gap:clamp(30px,6vw,90px);align-items:center;padding:clamp(58px,9vw,116px) 0 72px}.eyebrow{display:flex;align-items:center;gap:10px;color:var(--mint);font-size:.7rem;font-weight:800;letter-spacing:.17em;text-transform:uppercase}.eyebrow i{display:block;width:28px;height:1px;background:var(--mint)}h1,h2,h3,p{margin-top:0}.hero h1{margin:18px 0 20px;font-size:clamp(2.8rem,6vw,6.1rem);line-height:.98;letter-spacing:-.07em}.hero h1 em{font-style:normal;color:var(--mint)}.lede{max-width:550px;color:#c4cbdd;font-size:clamp(1rem,1.5vw,1.18rem);line-height:1.62}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:.62rem .95rem;border:1px solid var(--line);border-radius:999px;color:var(--ink);background:rgba(255,255,255,.05);font-size:.82rem;font-weight:760;text-decoration:none;cursor:pointer;transition:transform .18s ease,border-color .18s ease,background .18s ease}.button:hover{transform:translateY(-1px);border-color:rgba(110,230,193,.66);background:rgba(110,230,193,.1)}.button.primary{border-color:rgba(110,230,193,.45);background:linear-gradient(135deg,rgba(110,230,193,.2),rgba(139,210,255,.12))}.puzzle-stage{padding:20px;border:1px solid var(--line);border-radius:28px;background:linear-gradient(145deg,rgba(20,35,68,.9),rgba(10,16,37,.83));box-shadow:var(--shadow)}.puzzle-stage-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.puzzle-kicker{color:var(--muted);font-size:.72rem;font-weight:760;letter-spacing:.12em;text-transform:uppercase}.puzzle-count{padding:.34rem .58rem;border:1px solid rgba(239,210,146,.32);border-radius:999px;color:var(--gold);font-size:.68rem;font-weight:800}.board-wrap{position:relative;width:min(100%,600px);margin:auto;aspect-ratio:1;border:7px solid rgba(232,228,215,.15);border-radius:5px;background:#172544;box-shadow:0 22px 50px rgba(0,0,0,.35)}.board{display:grid;grid-template-columns:repeat(8,1fr);width:100%;height:100%;overflow:hidden;border-radius:1px}.square{position:relative;display:grid;place-items:center;border:0;padding:0;cursor:pointer;background:var(--board-light)}.square.dark{background:var(--board-dark)}.square:focus-visible{outline:3px solid var(--mint);outline-offset:-3px;z-index:2}.square.selected{box-shadow:inset 0 0 0 4px rgba(110,230,193,.9),inset 0 0 24px rgba(110,230,193,.34)}.square.target{box-shadow:inset 0 0 0 4px rgba(239,210,146,.84)}.square.correct{box-shadow:inset 0 0 0 4px rgba(110,230,193,.95)}.square.wrong{animation:shake .24s linear 1;box-shadow:inset 0 0 0 4px rgba(255,155,155,.9)}.square img{width:93%;height:93%;object-fit:contain;pointer-events:none;filter:drop-shadow(0 2px 1px rgba(0,0,0,.25))}.coord-file,.coord-rank{position:absolute;color:rgba(6,16,35,.65);font-size:.6rem;font-weight:800;line-height:1;pointer-events:none}.coord-file{right:4px;bottom:3px}.coord-rank{top:3px;left:4px}.dark .coord-file,.dark .coord-rank{color:rgba(245,248,255,.72)}.puzzle-under{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:15px}.puzzle-status{min-height:24px;color:var(--muted);font-size:.78rem}.puzzle-status.good{color:var(--mint)}.puzzle-status.bad{color:var(--error)}.text-button{border:0;padding:0;color:var(--blue);background:transparent;font-size:.75rem;font-weight:760;cursor:pointer}.text-button:hover{text-decoration:underline}.score-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:70px}.score-card{padding:18px 20px;border:1px solid var(--line);border-radius:18px;background:rgba(15,23,48,.6)}.score-card strong{display:block;font-size:1.4rem;line-height:1}.score-card span{display:block;margin-top:7px;color:var(--muted);font-size:.72rem}.how-section{padding:0 0 78px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-heading h2{margin:0;font-size:clamp(1.55rem,3vw,2.45rem);letter-spacing:-.05em}.section-heading p{max-width:500px;margin:0;color:var(--muted);font-size:.9rem}.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.how-card{padding:22px;border:1px solid var(--line);border-radius:20px;background:rgba(15,23,48,.62)}.how-card span{color:var(--mint);font-family:DeepSquare,Inter,sans-serif;font-size:.78rem}.how-card h3{margin:19px 0 9px;font-size:1.1rem}.how-card p{margin:0;color:var(--muted);font-size:.79rem;line-height:1.6}.ecosystem{display:grid;grid-template-columns:1.15fr .85fr;gap:13px;padding-bottom:82px}.ecosystem-card{padding:25px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(140deg,rgba(22,37,71,.84),rgba(10,16,36,.74))}.ecosystem-card h2{margin:0 0 10px;font-size:1.55rem;letter-spacing:-.04em}.ecosystem-card p{margin:0;color:var(--muted);font-size:.85rem}.ecosystem-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:17px}.ecosystem-links a{padding:.5rem .65rem;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.71rem;text-decoration:none}.ecosystem-links a:hover{color:var(--ink);border-color:rgba(110,230,193,.6)}.site-footer{border-top:1px solid var(--line);padding:24px 0 32px;color:var(--quiet);font-size:.72rem}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:18px}.footer-links{display:flex;flex-wrap:wrap;gap:14px}.footer-links a{text-decoration:none}.footer-links a:hover{color:var(--ink)}.content-main{padding:82px 0}.content-hero{max-width:760px;margin-bottom:36px}.content-hero h1{margin:15px 0 18px;font-size:clamp(2.5rem,5vw,4.5rem);line-height:1.02;letter-spacing:-.06em}.content-hero h1 em{font-style:normal;color:var(--mint)}.content-lede{color:var(--muted);font-size:1.08rem}.contact-card{max-width:760px;padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--panel);box-shadow:var(--shadow)}.contact-form{display:grid;gap:15px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.contact-form label{display:grid;gap:7px;color:var(--muted);font-size:.75rem;font-weight:700}.contact-form input,.contact-form textarea{width:100%;padding:.7rem .78rem;border:1px solid var(--line);border-radius:11px;color:var(--ink);background:rgba(5,11,27,.58);outline:none}.contact-form textarea{min-height:150px;resize:vertical}.contact-form input:focus,.contact-form textarea:focus{border-color:rgba(110,230,193,.68);box-shadow:0 0 0 3px rgba(110,230,193,.12)}.contact-form button{justify-self:start}.form-status{min-height:24px;margin:0;color:var(--mint);font-size:.78rem}.form-status.error{color:var(--error)}.honeypot{position:absolute!important;left:-10000px!important}.legal-copy{max-width:840px;color:var(--muted)}.legal-copy h2{margin-top:31px;color:var(--ink);font-size:1.25rem}.legal-copy a{color:var(--blue)}@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-3px)}75%{transform:translateX(3px)}}@media(max-width:960px){.hero{grid-template-columns:1fr}.puzzle-stage{max-width:680px}.how-grid{grid-template-columns:repeat(3,1fr)}.ecosystem{grid-template-columns:1fr}.site-nav{display:none}}@media(max-width:640px){.nav-shell,.shell{width:min(100% - 28px,1220px)}.nav-shell{min-height:68px}.brand-sub{font-size:.58rem}.hero{padding:54px 0 48px}.hero h1{font-size:clamp(2.6rem,14vw,4.2rem)}.puzzle-stage{padding:12px}.board-wrap{border-width:4px}.score-strip{grid-template-columns:1fr 1fr;margin-bottom:52px}.score-card:last-child{grid-column:1 / -1}.section-heading{display:block}.section-heading p{margin-top:9px}.how-grid{grid-template-columns:1fr}.ecosystem{padding-bottom:58px}.form-grid{grid-template-columns:1fr}.content-main{padding:58px 0}.footer-inner{display:block}.footer-links{margin-top:11px}}
/* Keep the progress row aligned with the shared shell instead of pinning it to the viewport edge. */
.score-strip{margin-left:auto;margin-right:auto}

/* The board is a fixed-ratio interaction surface: eight columns and eight rows
   must always share the same cell size, independent of the surrounding copy. */
.puzzle-stage{min-width:0}
.puzzle-title-value{margin-top:4px;font-weight:800;line-height:1.25}
.board-wrap{width:min(100%,640px);height:auto;aspect-ratio:1 / 1;margin:0 auto;padding:10px;border:1px solid rgba(235,238,255,.28);border-radius:20px;background:linear-gradient(145deg,rgba(9,15,35,.95),rgba(24,36,70,.82));box-shadow:0 24px 56px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.11)}
.board{width:100%;height:100%;min-width:0;min-height:0;aspect-ratio:1 / 1;display:grid;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr));overflow:hidden;border:1px solid rgba(8,15,34,.42);border-radius:10px;isolation:isolate}
.square{min-width:0;min-height:0;aspect-ratio:1 / 1;touch-action:none;overflow:hidden}
.square img{display:block;width:88%;height:88%;object-fit:contain;user-select:none}
.square.move-target::after,.square.capture-target::after{position:absolute;z-index:2;content:"";pointer-events:none;border-radius:50%}
.square.move-target::after{width:18%;height:18%;background:rgba(110,230,193,.86);box-shadow:0 0 0 5px rgba(110,230,193,.14),0 0 18px rgba(110,230,193,.3)}
.square.capture-target::after{inset:12%;border:4px solid rgba(239,210,146,.86);box-shadow:0 0 16px rgba(239,210,146,.24)}
.square.selected{z-index:3;background-image:linear-gradient(rgba(110,230,193,.26),rgba(110,230,193,.26));box-shadow:inset 0 0 0 3px rgba(110,230,193,.95),inset 0 0 24px rgba(110,230,193,.38)}
.board-instruction{margin:13px 2px 0;color:var(--quiet);font-size:.69rem;line-height:1.45;text-align:center}
.puzzle-feedback{min-width:0;flex:1}.puzzle-feedback .puzzle-status{margin:0}.move-preview{display:block;min-height:17px;margin-top:2px;color:var(--quiet);font-size:.68rem}.puzzle-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}.puzzle-meta{color:var(--quiet);font-size:.72rem}.meta-row{margin-top:7px}.puzzle-status.hint{color:var(--gold)}
@media(max-width:640px){.board-wrap{padding:6px;border-radius:15px}.board{border-radius:7px}.square.move-target::after{width:22%;height:22%}.square.capture-target::after{inset:10%;border-width:3px}.puzzle-under{align-items:flex-start}.puzzle-feedback{width:100%}.puzzle-actions{width:100%;justify-content:flex-start}.meta-row{align-items:center}.puzzle-meta{font-size:.67rem}}