:root{--bg:#0e0d12;--bg-raised:#17151e;--bg-elevated:#1e1b28;--border:#2b2738;--border-strong:#3a3450;--text:#f2eefb;--text-dim:#a89fc0;--text-faint:#6f668a;--accent:#a78bfa;--accent-hot:#f472b6;--gold:#fbbf24;--tier1:#34d399;--tier2:#38bdf8;--tier3:#fb923c;--tier4:#c084fc;--danger:#f87171;--radius:14px;--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,monospace}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);background-image:radial-gradient(1200px 500px at 50% -200px,#241f3a66,transparent);color:var(--text);font-family:var(--font);line-height:1.55;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{line-height:1.15;letter-spacing:-.02em}button,input,select,textarea{font:inherit}::selection{background:#a78bfa55}.container{max-width:980px;margin:0 auto;padding:0 18px}.narrow{max-width:640px}.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:12px}.nav .logo{font-weight:800;font-size:1.25rem;letter-spacing:-.03em;color:var(--text)}.nav .logo em{font-style:normal;background:linear-gradient(90deg,var(--accent),var(--accent-hot));-webkit-background-clip:text;background-clip:text;color:transparent}.nav .links{display:flex;gap:16px;align-items:center;font-size:.95rem}.nav .links a{color:var(--text-dim)}.nav .links a:hover{color:var(--text);text-decoration:none}.btn{display:inline-block;border:1px solid var(--border-strong);background:var(--bg-elevated);color:var(--text);padding:10px 18px;border-radius:999px;cursor:pointer;font-weight:600;font-size:.95rem;transition:all .15s ease;text-align:center}.btn:hover{border-color:var(--accent);text-decoration:none;transform:translateY(-1px)}.btn:disabled{opacity:.45;cursor:default;transform:none}.btn-primary{background:linear-gradient(90deg,var(--accent),var(--accent-hot));border:none;color:#14101c}.btn-primary:hover{filter:brightness(1.08)}.btn-small{padding:6px 13px;font-size:.85rem}.btn-ghost{background:transparent;border-color:var(--border);color:var(--text-dim)}.card{background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card-hover:hover{border-color:var(--border-strong);text-decoration:none}.card-hover:hover,.pill{background:var(--bg-elevated)}.pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);color:var(--text-dim);border-radius:999px;padding:3px 12px;font-size:.8rem;font-weight:600}.pill-accent{color:var(--accent);border-color:#a78bfa44}.pill-gold{color:var(--gold);border-color:#fbbf2444}.board{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:8px;gap:8px;margin:14px 0}.tile{position:relative;background:var(--bg-elevated);border:1px solid var(--border);border-radius:10px;padding:0 6px;min-height:72px;display:flex;align-items:center;justify-content:center;text-align:center;font-weight:700;text-transform:uppercase;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;transition:transform .08s ease,background .12s ease,border-color .12s ease;color:var(--text);line-height:1.15;word-break:break-word}.tile:hover{border-color:var(--border-strong)}.tile:active{transform:scale(.96)}.tile.selected{background:linear-gradient(180deg,#322a4d,#2a2342);border-color:var(--accent);color:#fff;box-shadow:0 0 0 1px var(--accent)}.tile.shake{animation:shake .35s ease}@keyframes shake{20%{transform:translateX(-5px)}40%{transform:translateX(5px)}60%{transform:translateX(-4px)}80%{transform:translateX(3px)}}.tile.pop{animation:pop .3s ease}@keyframes pop{40%{transform:scale(1.08)}}.solved-group{border-radius:10px;padding:12px 14px;margin:0 0 8px;text-align:center;animation:reveal .45s ease}@keyframes reveal{0%{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}.solved-group .g-name{font-weight:800;text-transform:uppercase;letter-spacing:.02em;font-size:.9rem;color:#101014}.solved-group .g-terms{color:#101014cc;font-weight:600;font-size:.9rem}.solved-group.tier-1{background:var(--tier1)}.solved-group.tier-2{background:var(--tier2)}.solved-group.tier-3{background:var(--tier3)}.solved-group.tier-4{background:var(--tier4)}.game-controls{gap:10px;margin:16px 0;flex-wrap:wrap}.game-controls,.mistakes{display:flex;justify-content:center}.mistakes{gap:7px;align-items:center;color:var(--text-dim);font-size:.9rem}.mistake-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);display:inline-block;transition:all .2s}.mistake-dot.used{background:var(--border);transform:scale(.7)}.toast{position:fixed;left:50%;top:18px;transform:translateX(-50%);background:var(--text);color:var(--bg);font-weight:700;padding:10px 20px;border-radius:999px;z-index:50;animation:toastIn .25s ease;font-size:.95rem;box-shadow:0 8px 30px #0009}@keyframes toastIn{0%{opacity:0;transform:translate(-50%,-8px)}to{opacity:1;transform:translate(-50%)}}.result-panel{text-align:center;animation:reveal .4s ease}.share-grid{font-size:1.35rem;line-height:1.35;letter-spacing:2px;margin:10px 0}.streak-flame{font-size:1.05rem;color:var(--gold);font-weight:800}table.data{width:100%;border-collapse:collapse;font-size:.92rem}table.data th{text-align:left;color:var(--text-faint);font-weight:600}table.data td,table.data th{padding:8px 10px;border-bottom:1px solid var(--border)}table.data tr:last-child td{border-bottom:none}.input{width:100%;background:var(--bg-elevated);border:1px solid var(--border-strong);color:var(--text);border-radius:10px;padding:11px 14px;outline:none}.input:focus{border-color:var(--accent)}label.lbl{display:block;font-size:.85rem;color:var(--text-dim);margin:14px 0 6px;font-weight:600}.hero{text-align:center;padding:52px 0 30px}.hero h1{font-size:clamp(2rem,6vw,3.4rem);margin:0 0 14px;font-weight:850}.hero .sub{color:var(--text-dim);font-size:1.15rem;max-width:560px;margin:0 auto 26px}.gradient-text{background:linear-gradient(90deg,var(--accent),var(--accent-hot),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}.channel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));grid-gap:12px;gap:12px;margin:18px 0}.channel-card{display:block;color:var(--text)}.channel-card .emoji{font-size:1.8rem}.channel-card h3{margin:8px 0 2px;font-size:1.05rem}.channel-card .meta{color:var(--text-faint);font-size:.82rem}.footer{border-top:1px solid var(--border);margin-top:70px;padding:28px 0 40px;color:var(--text-faint);font-size:.85rem}.footer a{color:var(--text-dim);margin-right:16px}.kpi-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));grid-gap:10px;gap:10px}.kpi{background:var(--bg-raised);border:1px solid var(--border);border-radius:12px;padding:14px}.kpi .v{font-size:1.5rem;font-weight:800}.kpi .l{color:var(--text-faint);font-size:.8rem}.prose{color:var(--text-dim)}.prose h2{margin-top:34px}.prose h2,.prose h3,.prose strong{color:var(--text)}.prose code{font-family:var(--mono);background:var(--bg-elevated);padding:1px 6px;border-radius:6px;font-size:.88em}.tier-diamonds{letter-spacing:1px}.t1{color:var(--tier1)}.t2{color:var(--tier2)}.t3{color:var(--tier3)}.t4{color:var(--tier4)}@media (max-width:560px){.tile{min-height:62px;font-size:.78rem}.hero{padding:30px 0 16px}.nav .links{gap:10px;font-size:.88rem}}